A loss of engine power and rough idling in the vehicles mentioned above may be caused by defective injection valves. An additional stored error code P0093 indicates that there is a pressure drop in the fuel system.

An undefinable buzzing noise heard in the vehicles mentioned above when the air conditioning is switched off may be caused by the air conditioning compressor. The buzzing noise occurs when the engine is at idle speed and may be caused by an internal voltage fault in the compressor.

Aftertreatment is carried out to convert the pollutants produced during combustion into harmless exhaust gases. Exhaust gas aftertreatment components include catalytic converters and particulate filters. Nowadays, both components can be installed on a direct-injection petrol engine as well as on a diesel engine.

With this repair issue, the customer complains about receiving a variety of error messages in the instrument cluster. The cause of the above-mentioned problem is a damaged electrical cable (rubbing against the steering column).

You probably have not had this vehicle in your workshop before. In order to save you searching for the cabin filter, here are a few installation and removal instructions.

On the above-mentioned vehicle with a start-stop system, the engine control lamp may suddenly come on. At the same time, there may be a drop in engine performance. Error codes P0300 / P301 / P302 / P0303 / P0304 (cylinders 1-4 misfiring) may be stored in the control unit.

The rain sensor is a driver assistance system which takes the strain off the driver by automatically activating the windshield wiper system when it rains and thereby significantly improving in-vehicle safety and comfort. In the mid-1990s, the rain sensor started to be fitted in vehicles and since then has been a permanent feature of modern vehicle electronics.

On the above-mentioned vehicle, the airbag control light may come on permanently and the error memory cannot be cleared.

If the error message "SCBS / City emergency stop assistant forward gear malfunction" is displayed on the instrument cluster on the vehicle models mentioned above, one cause for this may be a defective boost pressure sensor.

The primary task of the exhaust system is conducting the combustion gases of the engine past the driver's cab into the open air. Noise caused by combustion is reduced to the permissible volume by integrated mufflers.

Renewing the starter is quite challenging at first because of its limited accessibility. Proceed as follows to remove starter.

If the error message "Charging system malfunction - engine stop possible" is displayed in the instrument cluster on the above-mentioned vehicle model, one cause for this may be a defective overrunning alternator pulley.