Battery, Disconnecting and Connecting

Battery, Disconnecting and Connecting

Observe notes on contact corrosion. Refer to=> [ Contact Corrosion ] Contact Corrosion.

Accident risk.

• When working on pyrotechnic components (such as airbags and belt tensioners), the battery must be disconnected with the ignition switched on.

TDI (SCR) vehicles

• After the ignition is switched off, the reducing agent goes from the metering line to the reducing agent injector (N474) and back into the reducing agent active chamber.

• Wait until all the reducing agent has been returned before working in this area. This could take up to 10 minutes after switching off the ignition.

• Only after this is complete can the battery be disconnected. Again, this could take up to 10 minutes after switching off the ignition.

Disconnecting






- Switch off ignition and remove ignition key.

- Lift the luggage compartment floor covering by the handle and hang the handle on the rear lid seal.

- Open the cover - 3 - over the battery negative terminal.

- Loosen the nut - 1 - several turns and remove the ground wire terminal clamp - 2 - from the battery terminal.

Connecting






• Tightening specification. Refer to=> [ Battery Overview ] Battery Overview.

- Disconnect the connector - 3 - on the Battery monitoring control module (J367) - 1 -.

- Connect the ground wire terminal clamp "1" by hand to the battery negative terminal - - - and tighten the nut.

- Connect the electrical connector on the battery monitoring control module.

When the battery is connected, the following steps must be performed:

• Activate the one-touch up/one-touch down power window regulators. Refer to the Owner's Manual.

• Check DTC memories of all control modules and erase "Under voltage" DTC if necessary using the Vehicle Diagnosis Tester.

• After connecting the power supply, the ABS warning lamp may only go out after the vehicle has been driven a few yards.