Acceleration slip regulation (ASR), distinguishing features - GF42.40-P-0003-02A
Models 129, 140, 202 as of 1.6.94, 168, 170, 208, 210 with code (471a) acceleration slip regulation (ASR)
ASR I Model 126 as of 10/87 up to 08/89
Features
- Separate hydraulic unit for ABS and ASR
- ASR storage pressure supply from separate charge pump
- ASR control functions
- Brake intervention
- Throttle valve return
ASR II Model 124 (except 124.034/036) as of 01/90
Model 126 as of 09/89
Model 129.060/061/066 as of start of production
Model 201.029 as of 06/90
Features
- ABS and ASR hydraulic unit combined into a compact hydraulic unit
- ASR storage pressure supply from charge pump in the hydraulic unit and additional charging pump
- Model 124 as of 09/92 EFP with fault memory
- ASR control functions
- Brake intervention
- Throttle valve return
ASR III Model 124.034/036 as of start of production
Model 129.058/063/067/076 as of start of production
Model 140 as of start of production
Manual transmission (as of 10/93)
Features
- Hydraulic design as for ASR II
- ASR with MSR = engine braking regulation
- Vehicles with module box in engine compartment
- System linking of ASR, EFP and HRM or LH control modules and EZL/AKR control module via CAN data line.
- System with diagnostic fault memory (fixed memory)
Fault can be read out/erased via the data link connector (38-pin) with pulse counter or via Hand- Held-Tester
- ASR control functions
- Brake intervention
- Throttle valve return
- Advance angle adjustment - retarded
- MSR control function
- Throttle valve opening
ASR IV Model 202.028 as of start of production
Manual transmission (as of 10/93)
Features
- Hydraulic unit with two 2/2-way valves per wheel
- Uprated charging pump in wheelhouse of left front fender
- Hydraulic function without pressure accumulator, pressure switch and charging pump
- Internal venting sequence of ASR hydraulics
- Brake fluid reservoir with additional ASR brake fluid check switch and return line from ASR hydraulic unit
- System linking of ASR, EFP and HFM control modules via CAN data line
- ASR with MSR = engine braking regulation
- System with diagnostic fault memory (fixed memory)
Fault can be read out/erased via the data link connector (38-pin) with pulse counter or via Hand-Held-Tester
- ASR with manual transmission (as of 10/93)
- ASR control functions
- Brake intervention
- Throttle valve return
- Advance angle adjustment - retarded
- MSR control function
- Throttle valve opening
ASR V Model 129 as of 06/94
Model 140 as of 06/94
Model 168 as of start of production
Model 170 as of start of production
Model 202 as of 06/94
Model 208 as of start of production
Model 210 as of start of production
Automatic and manual transmission
Features
- Hydraulic design with 2/2-way valves as ASR IV
- ASR with EBR= E ngine B raking R egulation
- Self-priming high-pressure/return pump
- Hydraulic function without charging pump
- No additional brake bleeding for ASR
- Normal brake fluid reservoir
- ASR OFF switch (ASR OFF)
- Flashing ASR warning lamp
- System networking of ASR, EA, ETC and HFM-SFI, LH-SFI, ME-SFI or MSM control modules and if necessary, DI/KSS control unit via CAN data bus
- System networking with instrument cluster via CAN data bus (as of approx. 01/96)
- System with diagnosis fault memory (read-only storage)
- ASR control functions
- Brake intervention
- Throttle valve return (except diesel engine and gasoline engine with fuel shut-off)
- Advance angle adjustment - retarded (except diesel engine and gasoline engine with fuel shut-off)
- Fuel shut-off (gasoline engine with fuel shut-off)
- Fuel quantity cancellation (diesel engine)
- EBR control function (except gasoline engine with fuel shut-off)
- Throttle valve opening (gasoline engine)
- Fuel quantity increase (diesel engine)
The fault memory can be read out/erased via the data link connector using the Hand-Held Tester