Replacement Lighting
The LCM can use substitute bulbs for various lights if a failure should occur, for example
- Front Parking Lights: If one of the parking lamps should fail, the LCM will illuminate the turn signal bulb on the affected side. The lamp will be dimmed by the LCM so that the intensity is the same as the parking lamp.
- Rear Taillights: If one of the rear taillights should fail, the LCM will switch on the brake lamp on the affected side. The lamp will be dimmed to the intensity of the tail lamp.
Output Voltage Limiting Function
The output voltage applied to the parking and tail lamps is regulated to increase the life of the lamps. If the voltage at the LCM increases over 12.5 volts, the LCM will reduce the voltage to 12 volts.
Follow Me Home Lighting
This convenience feature provides lighting for the driver and passengers to leave the vehicle and enter their homes.
The feature is switched "ON" by pulling the headlight flasher switch after the headlights and ignition have been switched OFF. The feature is switched OFF after a coded time delay or by switching the ignition ON.
MID Removal
The E39/E53 MID is removed from the center console as follows
- Pull the volume knob off the MID.
- Insert a T10 torx wrench into the recessed hole beneath the volume knob shaft.
- Turn the wrench 90° to the left until a stop is felt.
- While maintaining tension on the wrench in the stopped position, use the torx wrench as a pull handle to pull the left side of the MID out of the center console. The right side of the MID acts as a hinge on the center console.
The radio/tape player is removed by turning the 2.5mm alien head bolts to unlatch it from the center console as on previous radios. The radio alien head bolts are visible once the MID is removed.
Scheme 206
On-Board Computer (High version)
The BC processing is a function of the IKE and can be displayed in the cluster matrix display or on the MID.
The following BC functions are available for display
Scheme 207
- Time/Date.
- Arrival Time.
- Code.
- Two Timers for programming parked car ventilation.
- Distance.
- Stop Watch.
- Range.
- Limit.
- Average Speed.
- Average fuel consumption.
Operation and programming of the BC is carried out with the MID.
The menu displays change as each function is called up for programming/resetting purposes, this includes the changeover functions for the clock, mileage and MPG displays.
BC functions can be displayed in the cluster matrix by pressing the turn signal lever as in the past.
The cluster displays can be programmed for number of displays and order of appearance.
Setting a code with the BC will override the EWS cancellation of the drive away protection when the correct key is used.
An emergency deactivation is possible for the CODE function. A 10 minute wait time is required after disconnect/re-connection of the battery before the code is canceled.
Multi-Function Steering Wheel (MFL) & Cruise Control II (GR II)
Models: E38, E39, E53
Production Date: From start of production
Multi-Function Steering Wheel (MFL)
The MFL is a system that allows the driver to make various switching requests without having to look away from the road or remove a hand from the steering wheel.
The steering wheel incorporates the control switches for
Scheme 208
The switches are arranged on the left and right side of the Airbag pad. Both of the switch panels are micro processors that take the input request and produce digital signals that are sent to the Multi-Function Steering Wheel Control Module.
As introduced up to 9/96 the MFL-CM is located below the left side of the steering column behind the knee bolster.
After 9/96 the MFL-CM was deleted and the electronics were incorporated into the right button pad.
The input signals from the control switches are processed in the MFL and sent to the respective control modules for system operation.
The signals for the control of telephone, audio system and re-circulation operation are passed over the I/K-Bus. The signals for cruise control operation are passed to the cruise control module or DME through a separate data link from the MFL.
The MFL-CM contains a fault memory that monitors the steering wheel control switches. Diagnosis is carried out with the DIS/MoDiC.