Lighting Systems - Overview: Other BMW X6 E71

CAS: Car Access System

The Car Access System supplies signals for the terminal management (e.g. terminal 15 ON).

The adaptive headlights control unit is activated when terminal 15 is switched ON.

Light Switch

The rotary switch for the side lights and dipped headlights differs depending on the vehicle equipment level (adaptive headlights, automatic driving lights control, automatic or manual headlight-range adjustment). For the adaptive headlights function to operate, the light switch must be set to position "A" ("A" = "automatic driving lights control" and "adaptive headlights").

See LIGHT SWITCH

Turn-Signal/Main-Beam Switch

The main-beam headlights are switched on and off with the turn-signal/main-beam switch (by pressing or pulling the switch). The adaptive headlights function operates with both dipped and main-beam headlights.

See DIRECTION INDICATOR/MAIN-BEAM SWITCH

SZL: Steering Column Switch

The SZL control unit forwards the signals from the turn-signal/main-beam switch to the adaptive headlights control unit.

1. E60, E61, E63, E64, E65 and E66 See «SZL: STEERING COLUMN SWITCH CLUSTER»(ref-202162-S22513363602006031400000)
2. E70, E81, E87, E90, E91, E92, E93 The steering column switch cluster forwards the signals from the turn-signal/main-beam switch to the footwell module (FRM).

Ride-Height Sensors

If the special equipment "Adaptive headlights" is fitted, the adaptive headlights control unit evaluates the signals from the ride-height sensors. This is because: the adaptive headlights control unit also controls the automatic headlight-range adjustment.

The automatic headlight - range adjustment feature adjusts the vertical aim of the headlights to compensate for variations in the vehicle tilt angle (e.g. when the vehicle is laden, and under braking and acceleration in dynamic driving situations).

See E60, E61, E63, E64, E65, E66, E90 - RIDE-HEIGHT SENSORS

Brake Light Switch

If the special equipment "Adaptive headlights" is fitted, the signals from the brake light switch are read by the adaptive headlights control unit.

In addition, the brake light switch signal is also a signal for automatic headlight-range adjustment, see RIDE-HEIGHT SENSORS above.

Position Sensor

1. E60, E61
2. E65, E66

Hella headlights have a position sensor.

The position sensor in the positioner module for the bi-xenon headlights supplies a signal for the horizontal movement of the headlights.

See POSITION SENSOR

Zero-Position Sensor

1. > E63, E64
2. > E70, E81, E87, E90, E91, E92, E93

Automotive Lighting headlights, previously Bosch, have a zero-position sensor.

The zero-position sensor registers the horizontal movement of the headlight.

See ZERO-POSITION SENSOR

EGS Control Unit or Reversing Light Switch

When reverse gear is engaged, the headlights are moved to the straight - ahead position.

1. On vehicles with automatic transmission, the EGS control unit provides the "Reverse gear engaged" signal. (EGS: electronic transmission control).
2. On vehicles with manual transmission, the signal is supplied by the reversing light switch.

Rain-Light Sensor For Automatic Driving Lights Control

The rain - light sensor measures the ambient brightness outside the vehicle.

1. In twilight conditions, the rain - light sensor transmits the message "Twilight" so that the automatic headlight - range adjustment can activate dipped headlights. The headlights are tilted up and down as required, but they are not yet moved towards the bend in the road.
2. In darkness, the rain-light sensor sends the message "Darkness". The adaptive headlights are then activated when the vehicle is cornering. The headlights are moved to the left or right

See RAIN-LIGHT SENSOR FOR AUTOMATIC DRIVING LIGHTS CONTROL

Steering-Angle Sensor and DSC Sensor

The steering angle sensor and DSC sensor (DSC = Dynamic Stability Control) supply signals for the adaptive headlights to the adaptive headlights control unit. These signals are evaluated as follows, depending on the vehicle's speed

1. Vehicle speeds up to 30 km/h: The adaptive headlights function is controlled using the information from the steering angle sensor (in the steering column switch cluster).
2. Vehicle speeds between 30 km/h and 50 km/h: In the 30 to 50 km/h speed range, there is a continuous transition in signal evaluation: from the evaluation of signals sent by the steering angle sensor to evaluation of the signals sent by the yaw-rate sensor (in the DSC sensor).
3. In extreme dynamic driving situations , e.g. if the vehicle starts to skid or fishtail, even at speeds less than 50 km/h , the signals from the yaw-rate-sensor are considered. If the vehicle starts to skid or fishtail, the headlights will move to the straight - ahead position. The headlights are not moved until the vehicle has stabilized.
4. Vehicle speeds over 50 km/h: At speeds upwards of 50 km/h, the signals from the yaw-rate sensor (in the DSC sensor) form the primary basis for control of the adaptive headlights function. Reason: For a constant cornering radius, the steering angle required increases disproportionately with speed. In addition, the steering angle required also depends on the coefficient of friction of the road surface. Yaw rate is directly proportional to speed. For this reason, the yaw rate is always the most suitable measure for controlling the adaptive headlights at high speeds. Even at high speeds, however, the steering angle sensor signal is used to detect (predict) the driver's commands in advance. This prediction is important: The yaw rate signal is not supplied until the vehicle has responded to the steering wheel movement. The steering-angle sensor signal is disabled so that rapid, momentary steering adjustments do not affect the adaptive headlights function.

A number of control units are involved in the adaptive headlights system (see above: CAS: CAR ACCESS SYSTEM , EGS CONTROL UNIT OR REVERSING LIGHT SWITCH and SZL: STEERING COLUMN SWITCH ). Depending on the model series and model version concerned, the adaptive headlights are actuated by the following control units

AHL: Adaptive Headlights

1. > E60, E61, E63, E64, E65, E66 up to 03/2005

The AHL control unit actuates the adaptive headlights.

For safety reasons, the AHL control unit is also responsible for the automatic headlight-range adjustment. This is because: Oncoming traffic must not be dazzled by the adaptive headlights. If a headlight sticks in an unfavorable position, the AHL control unit will attempt to move this headlight down (using the stepper motors in the automatic headlight-range adjustment).

The AHL control unit is connected to the PT-CAN.

See AHL: ADAPTIVE HEADLIGHTS

LM: Light Module

1. E60, E61, E63, E64, E65, E66 from 03/2005

From 03/2005, the AHL control unit is integrated in the light module.

The light module (LM) controls and monitors all vehicle lights. Information is transmitted and received via the K-CAN data bus.

The light module actuates the indicator light for the adaptive headlights (on the light switch).

See E60, E61, E63, E64 FROM 03/2005 and/or E65, E66 (FROM 03/2005)

FRM: Footwell Module

1. > E70, E81, E87, E90, E91, E92, E93

The footwell module controls the exterior lighting and the adaptive headlights.

The footwell module thus takes the place of the light module and the AHL control unit.

The footwell module actuates the indicator light for the adaptive headlights (on the light switch).

See FRM: FOOTWELL MODULE

The footwell module has its own system description.

SMC: Stepper Motor Controllers

The stepper motor controllers control the stepper motors in the headlights (for the automatic headlight - range adjustment and for the adaptive headlights). The stepper motor controllers are not capable of self - diagnosis. The stepper motor controllers are diagnosed and encoded via the control unit for adaptive headlights.

See SMC: STEPPER MOTOR CONTROLLERS

SGM: Safety and Gateway Module

1. E60, E61, E63, E64 until 09/2005 and E65, E66

The safety and gateway module (SGM) is the interface between the two data buses K-CAN and PT-CAN. Thus, all information exchanged between the light module and the AHL control unit passes through the SGM. Information from the yaw-rate sensor (in the DSC sensor) is also fed through the SGM to the AHL control unit.

KGM: Body Gateway Module

1. E60, E61, E63, E64 from 09/2005

The vehicle electrical system was changed from 09/2005.

As a result of the change, several control units were discontinued and some control unit functions were integrated into new control units.

The new body gateway module (KGM) supersedes the safety and gateway module (SGM) previously fitted, the door modules and the micro - power module.

Xenon-Headlight Control Unit

The xenon-headlight control unit actuates the bulb in the bi-xenon headlights.

The xenon-headlight control unit is not capable of self-diagnosis. The xenon control unit is monitored by the light module (E70, E81, E87, E90, E91, E92, E93: footwell module).

See E60, E61, E63, E64, E65, E66, E90 - BI-XENON HEADLIGHTS

Headlights

Option 524 "Adaptive headlights" is only available in conjunction with option 522 "Xenon dipped and main-beam headlights". This means that bi-xenon headlights are employed.

See E60, E61, E63, E64, E65, E66, E90 - BI-XENON HEADLIGHTS

Stepper Motors For the Adaptive Headlights

The stepper motors turn the positioner modules in the bi-xenon headlights.

The stepper motors move the headlights vertically and horizontally (vertically = up and down for automatic headlight range adjustment

horizontally = left and right for the adaptive headlights function).

The positioner modules execute the movement.

See POSITIONER MODULES

Indicator Light On the Light Switch

The indicator light (green LED) next to the "A" (= "automatic driving lights control" and "adaptive headlights") has 2 display functions

1. The indicator light lights up permanently when the automatic driving lights control or adaptive headlights function is switched on (= light switch in position "A").
2. The indicator light flashes if a fault develops in the adaptive headlight system.

1. E60, E61, E63, E64, E65 and E66: The indicator light is actuated by the light module.
2. E70, E81, E87, E90, E91, E92, E93: The indicator light is actuated by the footwell module.

System Functions

The adaptive headlights system moves headlights horizontal (i.e. from left to right) in order to illuminate the inside of a bend when cornering.

The following functions of the adaptive headlights system are described below

1. System activation and automatic calibration
2. Activation of stepper motor controllers
3. Speed-dependent analysis of signals
4. Adjustment of headlight horizontal aim
5. Deactivation of adaptive headlights function under extreme handling conditions
6. Deactivation of adaptive headlights function in response to system faults
7. Setting headlights to parked position
8. Automatic headlight-range adjustment
9. Adaptive headlights for automatic driving lights control
10. Turning light

Note. Different control units for adaptive headlights. E60, E61, E63, E64, E65, E66 up to 03/2005: The adaptive headlights are actuated by the AHL control unit. E60, E61, E63, E64, E65, E66 from 03/2005: The adaptive headlights are actuated by the light module (LM). E70, E81, E87, E90, E91, E92, E93: The adaptive headlights are actuated by the footwell module (FRM).

Activation of Stepper Motor Controllers

The control unit for adaptive headlights sends the stepper motor controllers (SMC) the nominal values for the positioner modules (position of positioner modules and speed of movement).

The control unit for adaptive headlights calculates the nominal values using the following signals

1. Vehicle road speed
2. Steering angle (at speeds up to 50 km/h, dependent on encoding)
3. Yaw rate (50 km/h upwards, see «STEERING-ANGLE SENSOR AND DSC SENSOR»(ref-264043-S38098247542008010800000) above)

Speed-Dependent Analysis of Signals

Depending on the road speed, the adaptive headlights are controlled using the following signals: Signals from the steering angle sensor and signals from yaw - rate sensor (in the DSC sensor).

The encoding (at the end of the production line) determines the priority assigned to sensor signals above which speed threshold.

Deactivation of Adaptive Headlights Function Under Extreme Handling Conditions

If the vehicle drifts, skids and loses sideways grip, the adaptive headlights function is deactivated as follows

1. The headlights are returned to the straight-ahead position. The headlights are no longer turned.
2. The dipped headlights remain on.

Deactivation of Adaptive Headlights Function In Response To System Faults

Until 09/2007, a system fault will be indicated by the indicator lamp on the light switch flashing.

From 09/2007 system fault will be indicated by a Check-Control message in the instrument cluster.

Dazzling of oncoming traffic must be prevented in the event of a system fault.

For this reason, the adaptive headlights function is deactivated as follows

1. If the stepper motors are still functional, the headlights are returned to the straight-ahead position. The headlights are no longer moved towards bends in the road.
2. If it is no longer possible for a headlight to be moved back to the straight-ahead position, the headlight is tilted downwards (by the stepped motors for automatic headlight-range adjustment). This prevents dazzling of oncoming traffic.
3. Vehicles up to 09/2007 If the headlight cannot be tilted downwards, the bi-xenon bulb in this headlight is disabled as follows: When the vehicle is parked up, the control unit registers sleep mode for the adaptive headlights, as follows: Vehicle standstill and terminal R OFF for several minutes. The next time the vehicle is restarted, the bi-xenon light of the defective headlight is not switched on. The front foglights are switched on in order to ensure a minimum level of illumination. The dipped beam headlights are not switched off while the vehicle is in motion.

Note. From 09/2007, the dipped - beam headlights will not be switched off in the event of a system fault. If a system fault develops in the adaptive headlights, the dipped-beam headlights for the affected headlight will not be switched off.

Setting Headlights To Parked Position

When terminal R is switched off, the headlights move to the parked position. The parked position is important for the headlights' next calibration sequence: From the parked position, the headlights are run through a calibration sequence in the pre-drive-check. During each calibration sequence, the control unit for adaptive headlights relearns the straight - ahead position for the headlights.

When the headlights have reached the parked position, the stepper motor controllers SMCs inform the control unit for adaptive headlights ("verification").

The control unit for adaptive headlights deactivates the stepper motor controllers.

The run-down period lasts approx. 10 seconds.

Adaptive Headlights For Automatic Driving Lights Control

The automatic driving lights control feature (option in conjunction with the rain-light sensor) automatically switches the side lights and dipped headlights on or off.

Switch-on conditions

1. The automatic driving lights control must be encoded (in the light module on the E60, E61, E63, E64, E65, E66, in the footwell module on the E70, E81, E87, E90, E91, E92, E93).
2. The light switch must be in position "A" ("A" for automatic driving lights control and adaptive headlights).
3. The rain-light sensor must be installed and operational. The rain-light sensor detects the brightness of the ambient light. The rain-light sensor sends the following prompts to the light module (on the E70, E81, E87, E90, E91, E92, E93: footwell module): Ambient brightness low: In twilight, darkness, in an underground garage or tunnel. "Switch on dipped headlights" request Ambient brightness sufficient. "Switch off dipped headlights" request

If only the side lights are to be switched on, the light switch must be set to side lights (switch position 1).

When the light switch is set to position "A", the control unit for adaptive headlights is also activated

1. When the automatic driving lights control function switches on the dipped headlights (e.g. at dawn/dusk), the adaptive headlights function is notified at the same time. The control unit for adaptive headlights thus assumes control of the automatic headlight - range adjustment.
2. In addition, signals from the rain - light sensor are evaluated (E60, E61, E63, E64, E65, E66: by the light module; E90, E91, E92, E93: by the footwell module). The headlights are not turned when the vehicle is cornering until total darkness sets in.

The message "dipped headlights on" is given individually for each headlight.

If a headlight fails, the adaptive headlights are switched off.

The front foglights are switched on in order to ensure a minimum level of illumination.

Turning Lights

The turning lights are coupled to the adaptive headlights (option 524).

The footwell module (FRM) uses the following signals to adjust the turning lights

1. Steering angle
2. Yaw rate
3. Status of reverse gear

1. > E81, E92, E93 with start of series production and E87 from 03/2007 Instead of the main-beam headlight (H7), the main headlight with turning light has a fixed additional reflector with an H3 bulb. The special shape of the lens prevents dazzle to the front.

The (Scheme 2) shows the main headlight with turning light on the E81, E87, E92, E93

Scheme 2

1. Bi-xenon light
2. H8 bulb for side lights and daytime driving lights
3. H3 bulb for turning lights
4. Reflector for turning lights

The (Scheme 3) shows the turning light on the E81, E87, E92, E93

Scheme 3

1. Left turn
2. Right turn

The following conditions must be satisfied for the turning lights to be switched on

1. Terminal 15 ON
2. Light switch in position "A" ("A" stands for automatic driving lights control)
3. Rain-light sensor detects twilight or darkness (threshold exceeded)

The turning lights are not activated at speeds greater than 70 km/h.

1. > Europe version: For legal reasons, the turning lights on the Europe version can only be activated via the turn signal indicator at speeds up to 40 km/h.

When reversing, the footwell module (FRM) activates the turning lights as follows in the speed range 0 km/h to 35 km/h

1. US version: both sides
2. Other countries: outside of turn only

When the turn signal indicator is switched on

If the vehicle is stationary, the turning lights will automatically be deactivated after approx. 4 seconds, e.g. when waiting at traffic lights. However, the turning lights can be activated again with the turn-signal/mainbeam switch (up to 3 times) until the reflector has reached a certain temperature.

A temperature model protects the headlights from excessive thermal stress.

The switching-off conditions for the turning light depend on the country concerned.

Note. Temperature monitoring by temperature model A temperature model in the footwell module calculates the temperature of the reflector. The temperature of the reflector must not exceed a certain value. If a critical temperature is reached, the footwell module (FRM) will deactivate the turning lights. The turning lights can be activated again after a cooling-off phase.

1. > E70 with start of series production The turning lights are realized using the front foglights. (Reason: The installation location of the headlights is too high for the turning lights. This prevents legal stipulations from being adhered to.) Depending on actuation, the right - hand and/or left-hand front foglight is switched on. The turning lights are actuated by the light module (LM). The front foglights have an additional reflector to illuminate the areas to the sides better. When turning, the front foglight on the inside of the turn is automatically activated. The additional reflector for the turning light reflects the light beam towards the turning area. The turning light are not switched on suddenly but rather faded according to special time parameters. Depending on the country concerned, the turning lights are switched on when cornering.

The (Scheme 4) shows the front foglight on the E70

Scheme 4

1. Additional reflector for the turning light
2. Reflector for the front foglights
3. Bulb

The following conditions must be satisfied for the turning lights to be switched on

1. Terminal 15 ON
2. Light switch in position "A" ("A" stands for automatic driving lights control)
3. Rain-light sensor detects twilight or darkness (threshold exceeded)

and

1. Turn signal indicator ON (not one-touch turn signal)
2. Speed range (forwards): Europe and Japan version from 0 km/h to 35 km/h US version from 0 km/h to 65 km/h
3. Swivel angle (theoretical): when stationary > or = 77° when driving > or = 10°

Alternatively

1. Speed range (reverse): 0 km/h to 35 km/h
2. Swivel angle (theoretical): when stationary or driving > or = 70°

If the vehicle is stationary, the turning lights will automatically be deactivated after a certain time, e.g. when waiting at traffic lights. However, the turning lights can be activated again with the turn-signal/main-beam switch.

The following conditions must be satisfied for the turning lights to be switched off

1. Light switch not in position "A" ("A" stands for automatic driving lights control)
2. Rain-light sensor does not detect twilight or darkness (lower threshold exceeded)

Alternatively

1. Turn signal indicator OFF
2. Speed range (forwards): Europe and Japan versions > or = 40 km/h US version > or = 70 km/h
3. Swivel angle (theoretical): when stationary 77° when driving 10°

Alternatively

1. Speed range (reverse): > or = 40 km/h
2. Swivel angle (theoretical): when stationary and when driving below a certain value

Alternatively

1. Vehicle skids and swings out.

Alternatively

1. Front foglights are switched on with the front foglights switch.

Preconditions For Activation

The control unit for adaptive headlights is "awake" from terminal 15 ON.

The movement of the lights is subject to the following conditions

1. Reverse gear must not be engaged.
2. The system is free of faults (indicator lamp not flashing and no Check-Control message)
3. The bulbs for the bi-xenon lights are OK in both headlights.
4. The vehicle must not be skidding or fishtailing.
5. The rain - light sensor must detect darkness.
6. Additional precondition for activation: automatic driving lights control is active (light switch in position "A", see above).

Notes for service staff

1. General note: See «E60, E61, E63, E64, E65, E66, E90 - ADAPTIVE HEADLIGHTS, GENERAL INFORMATION FOR SERVICE STAFF»(ref-202162-S06670722272006031500000)
2. Diagnosis: See «E60, E61, E63, E64, E65, E66, E90 - ADAPTIVE HEADLIGHTS DIAGNOSIS»(ref-202162-S00110895892006031500000)
3. Encoding/programming: See «E60, E61, E63, E64, E65, E66, E90 - ENCODING/PROGRAMMING ADAPTIVE HEADLIGHTS»(ref-202162-S24271172552006031500000)
4. Car and Key Memory: > E60, E61, E63, E64, E65, E66 The sensitivity of the driving light sensor can be set to one of 2 settings with the Car and Key Memory. > E70, E81, E87, E90, E91, E92, E93 All Car and Key Memory functions are programmed inside the vehicle itself. (Please refer to the "Personal profile" section of the Owner's Handbook: Personal settings for a maximum of 3 remote control units via the display in the instrument cluster or via the Central Information Display.)

National Versions

The options "Daytime driving lights" and "Manual headlight - range adjustment" are available in certain countries. Vehicles with manual headlight-range adjustment do not have adaptive headlights. This is because vehicles with manual headlight - range adjustment have halogen dipped headlights. Adaptive headlights (option 524) are only available in conjunction with option 522 "Xenon dipped and main - beam headlights".

Switching on adaptive headlights in conjunction with daytime driving lights function

The "Daytime lights" option (Northern Europe and Canada) means that dipped-beam headlights and side lights (E70, E92, E93: daytime driving lights) are always switched on

1. Light switch in position "2"
2. Terminal 15 ON

The automatic headlight - range adjustment is active (actuated by the control unit for adaptive headlights).

If terminal 15 is switched off, the dipped headlights and the side lights are automatically switched off as well.

The light switch must also be set to position "A" with the "Daytime driving lights" option. The control unit for adaptive headlights is then in standby.

System functions for "Daytime lights" option when the light switch is set to position "A"

1. If the vehicle is encoded with the "Daytime driving lights" option (end of production line), the light switch can remain in position "A" at all times. When terminal R is switched on, the side lights, parking lights and licence plate lighting are switched on. As soon as terminal 15 is switched on, the dipped headlights are also switched on.
2. When the dipped headlights are switched on, the control unit for adaptive headlights is activated (for automatic headlight-range adjustment).
3. The indicator lamp on the light switch lights up and indicates that the system is functional.
4. The adaptive headlights turn when the vehicle is stationary if the steering wheel is turned (to the right only).
5. The headlights are moved when the vehicle corners if the rain - light sensor registers darkness.

The switch-on conditions for the adaptive headlights in conjunction with special equipment "Daytime driving lights" are as follows

1. The vehicle must be encoded with the "Daytime driving lights" option (end of production line)
2. The light switch must be in position "A"
3. Terminal 15 must be switched on and reverse gear must not be engaged
4. Rain-light sensor must detect darkness

Subject to change.

Scheme 5

In accordance with the traffic situation, the FLA control unit sends a switch - on recommendation or a switch - off recommendation for the main - beam headlights to the light module or footwell module. On the basis of this recommendation and various other the input variables, the light module or footwell module decides whether the main-beam headlights should be switched on or off.

The following system functions of the main - beam assistant are described

1. Automatic main-beam headlight switch - off when oncoming traffic is detected
2. Automatic main-beam headlight switch - off when vehicle detected ahead of the car
3. Automatic main-beam headlight switch - off when adequate ambient lighting is detected
4. Automatic main-beam headlight switch - on
5. Indicators in the instrument cluster
6. Function limitations of the main - beam assistant
7. Automatic alignment of the main - beam assistant

Automatic Main - Beam Headlight Switch-Off When Oncoming Traffic Is Detected

The light cone of the main - beam headlights has a range of about 400 m. The image sensor can detect other light sources within a range of about 1000 m. This ensures that the image sensor detects oncoming vehicles before their drivers can be dazzled by the light cone of the main - beam headlights.

When the image sensor detects an oncoming vehicle, the FLA control unit sends a switch - off recommendation to the light module or footwell module. The light module or footwell module switches the main - beam headlights off.

Automatic Main - Beam Headlight Switch-Off When Vehicle Detected Ahead Of The Car

When the image sensor detects a vehicle ahead, the FLA control unit sends a switch - off recommendation to the light module or footwell module. The light module or footwell module switches the main - beam headlights off.

Automatic Main - Beam Headlight Switch-Off When Adequate Ambient Lighting Is Detected

When the image sensor detects an environment in which ambient lighting is adequate, the FLA control unit sends a switch-off recommendation to the light module or footwell module. The light module or footwell module switches the main-beam headlights off.

Adequate ambient lighting means

1. Daylight
2. Twilight
3. Street lighting (e. g. in illuminated towns)

Automatic Main-Beam Headlight Switch-On

If there is no reason for the lights to be dipped, the light module or footwell module switches the main-beam headlights on. The bi-xenon headlights are switched to full beam.

Displays In The Instrument Cluster

The FLA indicator light lights up in the instrument cluster as soon as the main-beam assistant is activated (blue on the BMW 7-Series, orange on the BMW 3, 5, and 6-Series and on the X5).

The main-beam indicator light also lights up (blue) in the usual way as soon as the main-beam headlights are switched on.

A Check-Control symbol appears (yellow) if the FLA control unit detects a system failure.

See INDICATORS FOR THE MAIN-BEAM ASSISTANT AND THE MAIN-BEAM HEADLIGHTS: E60, E61, E63, E64, E65, E66

Function Limitations Of The Main-Beam Assistant

The main-beam assistant can be subject to function limitations under the following circumstances

1. Inclement weather conditions (e.g. fog)
2. Poorly lighted road users (e.g. cyclists, pedestrians)
3. Certain road signs (e.g. the warning sign for a tight bend): Reflections from traffic signs may be incorrectly interpreted by the main - beam assistant as a vehicle driving ahead or as oncoming traffic. See «FUNCTION LIMITATIONS OF THE MAIN-BEAM ASSISTANT»(ref-202162-S16428824002006031600000)
4. Driving over crests and through dips See «FUNCTION LIMITATIONS OF THE MAIN-BEAM ASSISTANT»(ref-202162-S16428824002006031600000)
5. Certain traffic situations (e.g. tight bends, vehicles approaching from the side)
6. Image sensor's field of view obstructed (e.g. by snow)

For technical reasons, distinctions are drawn between the following conditions required for switch - on

1. Conditions required for switch-on for the FLA control unit
2. Conditions required for switch-on for the main-beam assistant
3. Conditions required for switch-on for the main-beam headlights

Conditions Required For Switch - On For The FLA Control Unit

The FLA control unit is active as of terminal 15 ON.

Conditions Required For Switch - On For The Main-Beam Assistant

1. Light switch set to position "A"
2. Dipped headlights switched on. When the switch is in position "A", the dipped headlights are switched on by the automatic headlight control.
3. Turn-signal/main-beam switch pressed forward (in forward direction of travel).

Conditions Required For Switch - On For The Main-Beam Headlights

1. Road speed greater than 50 km/h.
2. Reverse gear must not be engaged.
3. Image sensor does not detect an oncoming vehicle or a vehicle ahead.
4. Image sensor detects adequate darkness.

Notes for service staff

The following information is available for service staff

1. General note: See «MAIN-BEAM ASSISTANT, GENERAL INFORMATION FOR SERVICE STAFF: E60, E61, E63, E64, E65, E66»(ref-202162-S08900040162006031600000)
2. Diagnosis: See «MAIN-BEAM ASSISTANT DIAGNOSIS: E60, E61, E63, E64, E65, E66»(ref-202162-S27875758102006031600000)
3. Encoding/programming