Contents Section: Mechanical - Hydraulic All sections

Brakes -- Basic Knowledge -- 215 & 220 Chassis: Overview Mercedes-Benz Pullman W221

Mechanical - Hydraulic 3 illustrations ~614 words

Stop lamp switch component description - GF42.10-P-2010SM

ENGINE 113.986

ENGINE 113.987

ENGINE 113.988

ENGINE 113.989

shown on model 215, 220

Identifying Stop Lamp Switch (Shown On Model 215, 220). Scheme 8

Scheme 8: Identifying Stop Lamp Switch (Shown On Model 215, 220)

The stop lamp switch is located on top of the brake pedal.

Design

Identifying Stop Lamp Switch & Circuit Diagram. Scheme 9

Scheme 9: Identifying Stop Lamp Switch & Circuit Diagram

Function

  1. The N.O. contact (1) forwards the signal for brake pedal actuation to the stop lamp (stop lamp switch-on)
  2. The break contact (2) forwards the signal for brake actuation to the ESP and BAS control unit (ESP, PML and BAS) (N47-5), which then forwards the signal over the CAN data bus --> This signal is used, e.g. by the ME-SFI [ME] control unit (N3/10) to deactivate the cruise control function

Brake Assist (BAS), contents, function description - GF42.31-P-0999A

MODELS 129, 140 as of 1.12.96, 210 as of 1.2.97, 170, 202 as of 1.6.97, 168 up to 28.2.01, 163, 203, 208, 209, 215, 220

Notes on testing electronic components and system for damage resulting from an accident AH42.00-P-0001-06A Braking Assistant (BAS), function GF42.31-P-0001A Brake Assist (BAS), Driver Information Models 129, 140, 163, 168, 170, 202, Model 208 up to 07/99 Model 210 up to 06/99 GF42.31-P-0001-01A Models 203, 209, 215, 220 Model 208 as of 08/99 Model 210 as of 07/99 GF42.31-P-0001-01B Brake Assist (BAS), arrangement of components GF42.31-P-0001-02A BAS brake application, function GF42.31-P-2000A BAS function in normal operation GF42.31-P-3000A BAS pressure increase function GF42.31-P-3100A BAS pressure reduction function GF42.31-P-3200A Overview of Braking Assistant (BAS) system components - Location/Function/Design/ function GF42.31-P-9999A

BAS function in normal operation - GF42.31-P-3000A

MODELS 129,140 as of 1.12.96, 210 as of 1.2.97, 170, 202 as of 1.6.97, 168 up to 28.2.01, 163, 203, 208, 209, 215, 220

Brake application in normal operation

The BAS brake booster (A7/7) is supplied continuously via the vacuum line with inlet manifold vacuum or pump vacuum on diesel models. If the brake is not actuated, equal vacuum exists on both sides of the diaphragms. The compression spring holds the vacuum piston in its starting position.

On brake application, atmospheric air is fed to the back of the diaphragms via a duct. A pressure difference that increases with the braking is created between the front and rear chambers of the booster and the resulting force acts in the direction of the master brake cylinder and supplements foot pressure.

Illustration shows partial braking

Locating BAS Brake Booster. Scheme 10

Scheme 10: Locating BAS Brake Booster
BAS pressure increase functionGF42.31-P-3100A
BAS pressure reduction functionGF42.31-P-3200A
BAS brake booster, location / task / design / functionGF42.31-P-4000A
BAS control module, location / task / functionGF42.31-P-4500A

Overview of Braking Assistant (BAS) system components - Location/Function/Design/function - GF42.31-P-9999A

MODELS 129,140 as of 1.12.96, 210 as of 1.2.97, 170, 202 as of 1.6.97, 168 up to 28.2.01, 163, 203, 208, 209, 215, 220

BAS brake booster, location / task / design / functionA7/7GF42.31-P-4000A
BAS diaphragm travel sensor, location / task / functionA7/7b1GF42.31-P-4003A
BAS release switch, location/task/functionA7/7s1GF42.31-P-4001A
BAS solenoid valve location / task / functionA7/7y1GF42.31-P-4002A
BAS control module, location / task / functionN48GF42.31-P-4500A

Table of contents: Functional description, Electronic Stability Program (ESP) - GF42.45-P-0999C

MODEL 215, 220 / / (except, 220.08 /18) with CODE (472a) Electronic Stability Program (ESP)

Notes on towing AH42.00-P-0001-05B Notes on testing electronic components and systems for damage resulting from an accident AH42.00-P-0001-06B Electronic stability program (ESP), function GF42.45-P-0001B Electronic stability program (ESP), driver information GF42.45-P-0001-04B Electronic stability program (ESP), location of electronic components GF42.45-P-0001-03F Electronic stability program (ESP), location of hydraulic components GF42.45-P-0001-02C ESP braking moment control circuit, function GF42.45-P-2000C ASR drive torque control circuit, function GF42.40-P-2100A ABS control mode, function GF42.45-P-3000B ASR control mode, function GF42.45-P-3500B ESP control mode, function GF42.45-P-3700B Braking Assistant (BAS), function GF42.31-P-0001A Distronic (DTR), function Engines 112.922, 112.944, 113.941, 113.960, 113.986, 137.970, 613.960, 628.960 up to 30.06.00 GF30.30-P-0002K Engines 112.922, 112.944, 113.941, 113.960, 113.986, 137.970, 613.960, 628.960 as of 01.07.00 GF30.30-P-0002KA Survey of electronic stability program (ESP) system components, location/task/design/ function GF42.45-P-9999C

Electronic stability program (ESP), contents, function description - GF42.45-P-0999V

MODEL 210.08 /28, 220.08 /18 with CODE (472a) Electronic Stability Program (ESP)

ETS / ESP notes for towing, test and repair workModel 210GF42.35-P-0001-05A
Model 220GF42.35-P-0001-05PW
Electronic stability program (ESP), functionGF42.45-P-0001V
Electronic stability program (ESP), driver informationModel 210GF42.45-P-0001-04A
Model 220GF42.45-P-0001-04B
Electronic stability program (ESP), location of electrical componentsModel 210GF42.45-P-0001-03D
Model 220GF42.45-P-0001-03F
Electronic stability program (ESP), location of hydraulic componentsGF42.45-P-0001-02C
ESP brake moment control circuit, functionModel 210GF42.45-P-2000VE
ESP brake moment control circuit, functionModel 220GF42.45-P-2000VS
ASR drive torque control circuit, functionGF42.40-P-2100A
ABS control mode, functionGF42.45-P-3000B
ASR/ETS control mode, functionGF42.35-P-3500V
ESP closed-loop operation functionGF42.45-P-3700B
Brake Assist (BAS) functionGF42.31-P-0001A
Distronic (DTR), functionEngines 112.922, 112.944, 113.941, 113.960, 113.986, 137.970, 613.960, 628.960 up to 30.06.00GF30.30-P-0002K
Engines 112.922, 112.944, 113.941, 113.960, 113.986, 137.970, 613.960, 628.960 as of 01.07.00GF30.30-P-0002KA
Overview of system components, Electronic Stability Program (ESP), location/task/design/ functionGF42.45-P-9999V