Brake systems · Anti-lock brake system · Fault display via warning lamps

Fault display via warning lamps

Warning lamps

ItemDescription
1ABS warning lamp - K47-
2ESP warning lamp - K155-
3Brake system warning lamp - K118-

ABS warning lamp - K47-

  • If the ABS warning lamp - K47- -1- does not go out after the ignition has been switched on and test sequence has been completed, then the fault may be:

-a- The voltage supply is below 10 volts.

-b- There is a fault in the ABS.

In the event of an ABS fault -b-, the anti-lock brake system remains switched off, but the brake system remains fully operational.

-c- A temporary speed sensor fault occurred since the vehicle was last started.

In the event of a speed sensor fault -c-, the ABS warning lamp - K47- will extinguish automatically after restarting the engine and attaining a speed of above 2.75 km/h.

-d- The connection from dash panel insert to ABS control unit - J104- is interrupted. ⇒ Current flow diagrams, Electrical fault finding and Fitting locations

ABS warning lamp - K47- and brake system warning lamp - K118-

  • If the ABS warning lamp - K47- -1- goes out but the brake system warning lamp - K118- -3- remains on, the causes of the fault may be:

-a- The handbrake is applied.

-b- The brake fluid level is too low.

-c- There is a fault in the activation of the brake system warning lamp - K118-. ⇒ Current flow diagrams, Electrical fault finding and Fitting locations

  • If the ABS warning lamp - K47- -1- and the brake system warning lamp - K118- -3- light up, the anti-lock brake system and the EBPD (electronic brake pressure distribution) system have failed.
  • If the ESP and TCS warning lamp - K155- -2- does not go out after ignition is switched on and the test sequence has been completed, then the fault may be:

-a- Short-circuit to positive in TCS and ESP button - E256-.

-b- There is a fault in the activation of the ESP and TCS warning lamp - K155- ⇒ Current flow diagrams, Electrical fault finding and Fitting locations.

-c- The TCS/ESP system was switched off by the TCS and ESP button - E256-.

A fault in the system affecting only the TCS/ESP. The ABS/EDL and EBD safety systems on the vehicle remain fully functional ⇒ Read fault memory.

If the ESP warning lamp - K155- flashes while the vehicle is in motion, the TCS or ESP is in operation.