Signal lights have an important safety function. They demonstrate deceleration and a change in direction of the vehicle, and make the vehicle more visible to other road users when it is dark or during poor visibility.

The vehicles mentioned above may vibrate and make noise when accelerating, braking or starting. The knocking sounds are perceived as coming from the engine compartment.

In the vehicles mentioned above with air conditioning, the air flow from the air outlet nozzles may be impaired. Possibly the air flow to the footwell is permanently present and/or the air flow at the dashboard nozzles is insufficient.

If this defect is detected in the vehicle model mentioned above, a possible cause could be a defective connector on the body computer in the front left footwell.

Since an internal combustion engine cannot start by itself, a functioning starter is essential for a roadworthy vehicle. Malfunctions can be caused, for example, by incorrect connections, faulty solenoid switches or a damaged single-pinion gear.

On the vehicles mentioned above, the outside mirrors may not fold in when the vehicle is locked with the remote control. Furthermore, the locking function may be impaired when using the remote control.

If the fault mentioned above is detected, it may be in connection with the triggering of the fuel cut-off switch. A fuel cut-off switch is installed in this vehicle. The switch is triggered in the event of a sudden change in the vehicle's position and if any strong vibrations occur.

The following problem is observed on the vehicles mentioned above. During navigation, the display may malfunction (e.g. delayed image display).

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. 

If the engine of the above-mentioned vehicle only starts after the starter motor has been operated for a longer period of time, a faulty crankshaft sensor may be responsible for this. Crankshaft sensors are used to determine the speed and crankshaft position.

On the above-mentioned vehicles, bulbs for halogen headlamps can be replaced as follows:

• Switch off the ignition
• Disconnect the headlamp from the power supply by unplugging the electrical supply line

Vehicles with an adjustable or sliding sunroof are affected. When the sunroof is opened, water can penetrate into the vehicle interior.