Backrest Lock Switch Microswitch, Removing And Installing: Installing

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WARNING:

Follow all safety precautions when working with pyrotechnic components. Refer to SAFETY PRECAUTIONS .
Before handling airbag units (for example, connecting the connector), the technician handling it must "discharge static electricity" from their body. For example, this can be done by briefly touching the door striker.

-- Clean the thread on the shaft -3- with a thread tap, for example.

Fig 1: Installing New Nut On Shaft

Courtesy of AUDI OF AMERICA, LLC

-- Check the position of the backrest frame -2- and the hinge -1- on the left and right side.

The left and right side of the backrest frame must be in the position marked before removal -A and B arrows-.

-- If the left and right side of the backrest frame are not in the position marked before removal, correct the position accordingly.

-- Insert the switch unit -4- so the guide -arrow- covers the backrest frame -1- correctly.

Fig 2: Identifying Switch Unit, Installing

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the switch unit -4- to the tightening specification.

-- Connect the connector -5- to the switch unit multi-pin connector.

-- Position the locking bushing -4- on the shaft -3-.

Fig 3: Position Locking Bushing -4- On The Shaft -3-

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The catches -arrow- (quantity: 4) on the locking bushing must face the switch unit -1-.

When sliding the shaft in, do not engage the locking bushing -4- with the spindle -2-.

Lock the locking bushing only after adjusting the switch unit with the spindle.

-- Slide the shaft through the spindle and the hinge (sill side) until it stops.

-- Apply locking fluid to the threaded section of the shaft -3-. Refer to Parts Information.

Fig 4: Installing New Nut On Shaft

Courtesy of AUDI OF AMERICA, LLC

-- Install and tighten the new nut -5- on the shaft.

-- Adjust the switch unit micro-switch -2-. Refer to BACKREST LOCK SWITCH MICROSWITCH, ADJUSTING .

Fig 5: Adjusting Backrest Forward Stop Switch

Courtesy of AUDI OF AMERICA, LLC

-- After adjusting the switch unit, slide the locking bushing -4- onto the spindle -3-.

-- Lock the locking bushing with the spindle.

-- Check the switch unit. Refer to BACKREST LOCK SWITCH MICROSWITCH, CHECKING .

The rest of the installation is performed in reverse order of removal. Note The Following:

NOTE:

Make Sure The Connectors Are Installed All The Way And Engage Audibly.

WARNING:

The ignition must be on when connecting the battery. If pyrotechnic components (for example, airbag, belt tensioner) are not repaired correctly, they may deploy unintentionally after connecting battery. There must not be anyone in the vehicle interior when connecting the battery.

-- Connect the battery ground cable with the ignition switched on. Refer to BATTERY, DISCONNECTING AND CONNECTING .

NOTE:

If the Airbag Indicator Lamp -K75- indicates a fault, check the DTC memory, erase it and check it again using the Vehicle Diagnostic Tester.

-- Perform the following tests after removing and installing the switch unit:

Calibration, Performing. Refer to BACKREST LOCK SWITCH ADAPTATION DRIVE/CALIBRATION, PERFORMING .
Function Test, Performing. Refer to BACKREST LOCK SWITCH FUNCTION TEST, PERFORMING .