Electronic traction system (ETS), driver information - GF42.35-P-0001-03A

For ETS there are displays with various symbols in the instrument cluster.

Switching on the ignition and starting the engine

When the ignition is switched on (ignition/starter switch position "2") the indicator and malfunction indicator lamps in the instrument cluster (bulb check) come on and go out when the engine is running.

Fig 1: Identifying Electronic Traction System

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Driving mode

In driving mode the warning lamp flashes if a wheel speed does not correspond to the vehicle speed. Driving can thus be better adapted to the road conditions.

The warning lamp continues flashing for approx. 1 second after vehicle stability has been regained.

Malfunction indicator lamp evaluation

Due to the combined BAS/ETS malfunction indicator lamp the fault may be in the BAS and in the ETS. The ETS function is retained in the first case and the BAS function is retained in the second case.

If the ABS and BAS/ETS malfunction indicator lamps come on when the engine is running, there is a fault in at least two control circuits and at least two systems are switched off. The BAS function can be retained despite the ABS and ETS being switched off.

If the BAS/ETS malfunction indicator lamp come on in the ETS control mode and goes out after a while, a calculated temperature value of the brake linings concerned has been exceeded. Consequently, no ETS control takes place at the appropriate wheel (wheels) until the temperature has dropped again to a set value.

This switching off due to temperature is stored in the ETS control module.