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Assembly overview - hydraulic unit, brake servo/brake master cylinder > < Bosch 8.2i ABS/EDL/TCS/ESP

Polo Mk5

Fault display via warning lamps
Fault display via warning lamps
   
Warning lamps
  N45-10177
ItemDescription
1ABS warning lamp -K47-
2ESP warning lamp -K155-
3Brake system warning lamp -K118-

ABS warning lamp -K47-
   
t  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 case 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 (approx. 13 mph).
-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-
  N45-10177
t  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
t  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.
  WARNING
After the ABS warning lamp -K47- and the brake system warning lamp -K118- have lit up, it is possible that the rear wheels will lock up earlier.
ESP warning lamp -K155-
Only in vehicles with ESP.
  N45-10177
t  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.
  N45-10177

Assembly overview - hydraulic unit, brake servo/brake master cylinder > < Bosch 8.2i ABS/EDL/TCS/ESP