General Information
The wheel bearing must not be under a load while the drive axle threaded connection on the wheel side is loose.
If the bearings are loaded by the vehicle weight the wheel bearing will be damaged. This reduces the service life of the wheel bearings. Therefore observe the following:
- Bolt loosening procedure, refer to THREADED CONNECTION BETWEEN DRIVE AXLE AND WHEEL HUB, LOOSENING AND TIGHTENING .
Vehicles without a drive axle must not be moved, otherwise the wheel bearing will be damaged. If vehicle does have to be moved, always note the following points:
-- Install an outer joint in place of the drive axle.
-- Tighten the threaded connection between the outer joint and the wheel hub to 200 Nm.
Do not let the drive axle hang down. The inner joint could be damaged if it is bent too far.
There is a risk of injury if the engine starts automatically in vehicles with the Start/Stop System.
- For vehicles with an activated Start/Stop System (recognizable from a notification in the instrument cluster), the motor can be started automatically if needed.
- Make sure that the start/stop system is deactivated when working on the vehicle (turn off the ignition, turn on the ignition when necessary).
Handling the high voltage cables:
- Do not stand on or place tools on the high voltage cables or their components. This may damage the insulation.
- Do not bend or kink high voltage cables as this may damage the insulation.
- The round high voltage connectors are color coded with an exterior colored ring and mechanically coded with guide or code tabs. Observe the coding when connecting the round high voltage connector in order to avoid mechanical damage to the high voltage connector.
The engine could start unexpectedly.
For general work performed on the high voltage system the ignition must be switched off and the key must be kept outside of the vehicle interior.
High voltage components have hazardous voltage.
Note the following when working near high voltage components and high voltage cables:
- Cutting, deformed, and sharp edged tools or heat sources such as welding, solder, hot air and thermal glue are forbidden.
- Visually inspect the work area before working on high voltage components.
- Perform a visual inspection of the Electric Drive Power and Control Electronics -JX1-, the Electro-Drive Drive Motor -V141-, the Electrical A/C Compressor -V470- and the high voltage lines when working in the engine compartment.
- Visually inspect the high voltage cables and the covers when working on the underbody.
- Visually inspect the high voltage cables, the electronics and the High Voltage System Maintenance Connector -TW -, when working in the luggage compartment.
- Visually inspect all potential equalization cables.
Observe the following when performing the visual inspection:
- None of the components appear to have any external damage.
- The high voltage cable insulation and the potential equalization cable insulation are not damaged.
- The high voltage cables must not have any unusual deformations.
- Each high voltage component must be marked with a red warning label.
When working on vehicles with the ignition already switched on or that are ready to drive there is a danger of the engine starting unexpectedly and of being poisoned by gas in enclosed areas. Risk of body parts and/or clothing being clamped or pulled.
Perform the following before switching on the ignition:
- Move the selector lever into P.
- Activate the parking brake
- Turn off the ignition.
- Open the hood
- Connect the charger, such as the Battery Charger VAS5095A to the jump start of the 12V vehicle electrical system.
- Turn on the ignition.