Driver's Backrest Adjustment Motor V45 or V46

Driver's Backrest Adjustment Motor V45 or V46

Removing

• The driver backrest adjustment motor (V45) and/or the front passenger backrest adjustment motor (V46) must not be replaced because the end positions cannot be found again.

• If there is motor damage, the backrest frame should be replaced with the driver backrest adjustment motor (V45) or front passenger backrest adjustment motor (V46) as well as shaft and housing for driver backrest stop switch (E69) or front passenger backrest stop switch (E70).

• Remove backrest frame with faulty backrest adjustment motor (V45) or (V46) , side airbag, four-way lumbar support with motors, stop switch and headrest guides and install these parts in the new backrest frame.

• Follow all safety precautions when working on pyrotechnic components. Refer to => [ Restraint System Components, Safety Precautions and Testing Procedures ] Service Precautions.

• Before handling pyrotechnical components (for example, disconnecting the connector), the person handling them must "discharge static electricity". For example, by briefly touching the door striker pin.

- Remove the backrest. Refer to => [ Front Backrest ] Front Backrest.

- Remove backrest cover panel. Refer to => [ Backrest Cover ] Backrest Cover.

- Remove cover with upholstery. Refer to => [ Backrest Cover and Upholstery ] Backrest Cover and Upholstery.

- Remove side airbag. Refer to => [ Side Airbag ] Side Airbag.

- Remove four-way lumbar support. Refer to => [ Four-Way Lumbar Support ] Four-Way Lumbar Support.

- Disconnect electrical connectors.

- Remove driver seat lumbar support curvature adjustment motor (V125) or front passenger seat lumbar support curvature adjustment motor (V126). Refer to => [ Lumbar Support Curvature Adjustment Motors V125 and V126 ] Lumbar Support Curvature Adjustment Motors V125 and V126.

- Remove Driver Seat Lumbar Support Height Adjustment Motor (V129) or Front passenger Seat Lumbar Support Height Adjustment Motor (V130). Refer to => [ Lumbar Support Height Adjustment Motors V129 and V130 ] Lumbar Support Height Adjustment Motors V129 and V130.

- Remove driver backrest stop switch (E69) or front passenger backrest stop switch (E70). Refer to => [ Front Seat Backrest Stop Switches E69 and E70 ] Front Seat Backrest Stop Switches E69 and E70.

- Remove headrest guides. Refer to => [ Headrest Guide ] Headrest Guide.

Installation

Install in reverse order of removal. Note the following:

• Follow all safety precautions when working on pyrotechnic components. Refer to => [ Restraint System Components, Safety Precautions and Testing Procedures ] Service Precautions.

• Before handling pyrotechnical components (for example, connecting electrical connector), the person handling them must "discharge static electricity". For example, by briefly touching the door striker pin.

- Install removed assembly parts in new backrest frame.

- Make sure the headrest guides engage correctly in backrest frame.

- Switch on ignition.

• Make sure the connectors are installed all the way in and are secure.

Connect the battery with the ignition switched on. Pyrotechnic components could deploy after connecting the battery if they were not repaired correctly. Individuals must not be inside the vehicle when connecting the battery.

- Connect battery ground cable with ignition switched on.

- If Airbag Malfunction Indicator Lamp (MIL) (K75) indicates a fault after installation, DTC memory must be checked, deleted and checked again.