In the event of a malfunction (e.g. when a wire breaks) or low voltage in the on-board network (below 10.5V) the safety switch in the electronic control unit is activated and the ABS system is deactivated, which is indicated by the yellow ABS warning lamp illuminating in the instrument cluster. ASR and ESP systems (if it is installed) are also turned off. The normal service brake system continues to operate. When braking, the vehicle behaves as if it were not equipped with ABS.
If the BAS/ASR or BAS/ESP warning light comes on while driving, there is a problem with these systems.
If the ABS warning light comes on while driving, proceed as follows:
1. Stop driving, stop the engine and start it again.
2. Check the mains voltage: if it is below 10.5V, charge the battery.
If the ABS warning lamp lights up at the beginning of the trip and then goes out, this means that the voltage in the on-board network was initially low, but increased during the trip due to the operation of the generator. In this case, do the following:
1. Check fastening and contacts of plugs on the storage battery.
2. Place the vehicle on supports, remove the wheels, check the electrical wires leading to the sensors for external damage. If no faults are found, then a further check should be carried out at the service station. The car is equipped with an electronic self-diagnosis system, so all errors are automatically recorded in the memory of the storage device.