Acceleration slip regulation (ASR V/ETS), notes on towing, test and repair work - GF42.40-P-0005-01A

Models 129, 140, 202 as of 1.6.94, 168, 170, 208, 210 with code (471a) acceleration slip regulation (ASR) except models 210.08/28 

Towing 

• There is a lack of servo assistance when the engine is not running. Considerably higher forces are then required for braking and steering.
• The engine must not run when towing with a raised axle.

Test and repair work 

• The brake system is bled or the brake fluid is changed as on vehicles with ABS. Special ASR or ETS bleeding is not required.

Handling ETS/ASR parts on vehicles following an accident 

If, due to the extent of the damage to the vehicle or the position and external appearance of the hydraulic unit after the accident, it can be seen that the hydraulic unit has received a heavy blow, it is to be replaced.

Indications of this are for example:

• Hydraulic lines kinked
• Connections at hydraulic unit leaking
• Metal block of hydraulic unit shows signs of damage
• Electric cables or plug connections damaged
• Hydraulic unit has sprung out of the mounting and cannot just be installed again

If this does not apply, the system must nevertheless be subjected to a thorough function check. The solenoid valves and pump must be checked using the corresponding test steps in the Diagnosis Manual.

ETS only 

• The control module must be coded with the Hand-Held Tester when the ETS control module is replaced.

The code numbers can be displayed by pressing the "?" key.