Lights, Switches (Interior, Anti-Theft - Except Cabriolet) Audi A4 B6

Switches, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Special tools and equipment

1. Hook for front end 3370

Removing

1. Open glove box.
2. Carefully pull trim -1- off to rear using special tool 3370.
3. Carefully pry switch concerned out from switch mount -arrows- using a flat screwdriver.
4. Unplug connector.

Installing

Install in reverse order, paying attention to the following

1. Connect connector.
2. Push switch into recess in instrument panel and ensure it is properly located.

Front seat heating switch, removing and installing

The switches for front seat heating are integrated in operating and A/C control head -E87- and cannot be replaced individually.

1. Remove rear ashtray.
2. Press retaining tabs -arrow A- at right and left outward and swing switch mount toward rear -arrow B-.
3. Unhook switch mount at rear of center console.
4. Disconnect electrical harness connectors.
5. Unclip switch -1- and -2- from switch mount.

Installation is carried out in the reverse order.

1. Press light switch -arrow 1- while turning it clockwise -arrow 2-.
2. Hold switch in this position...
3. ... and pull light switch out from switch housing -3-.
4. Unplug connector.

Install in reverse order, paying attention to the following

1. Press switch into switch housing until catch engages.

1. Hook for front end 3370

1. Open glove box.
2. Pull off cover on right of instrument panel -arrow- using special tool 3370.
3. Unplug connector -2-.
4. Pull out pivot pin -1-.
5. Release switch -3- by turning clockwise and detach.

Note. (Scheme 252)with glove box removed.

Installation is carried out in the reverse order.

1. Remove front door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Unplug connector -1- from mirror adjuster switch -2-.
3. Carefully release retaining lugs -arrows- using a small screwdriver.
4. Pull mirror adjuster switch downward out of door trim.

Install in reverse order, paying attention to the following

Note. When installing, make sure that symbol panel is inserted in front of mirror adjuster switch.

1. Press mirror adjuster switch into switch mount until retaining lugs engage.

Scheme 244

1. Remove front door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Carefully release retaining lugs -arrows- using a small screwdriver.
3. Pull window lifter switch downward out of door trim.
4. Unplug connector -2- on window lifter switch -1-.

Install in reverse order, paying attention to the following

1. Press window lifter switch into switch mount until retaining lugs engage.

Scheme 245

1. Remove front door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Disengage tabs on side of armrest by pressing onto securing strip -arrows-.
3. Carefully disengage tabs -1- on trim side using a small screwdriver.
4. Pull switch for window regulator -2- downward out of door trim.
5. Disconnect electrical harness connector -3- at window lifter switch.

Installation is the reverse order of removal, while observing the following

1. Press window lifter switch into switch mount until it engages.

Scheme 246

1. Remove front door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Carefully release retaining lugs -arrows- using a small screwdriver.
3. Pull window lifter switch downward out of door trim.
4. Unplug connector -2- on window lifter switch -1-.

Install in reverse order, paying attention to the following

1. Press window lifter switch into switch mount until retaining lugs engage.

Scheme 247

Scheme 248

Scheme 249

1. Remove rear door trim: See «REAR DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Remove screws -1 to 3- at rear of door trim.
3. Remove armrest and disconnect electrical harness connector.
4. Pull switch mount -1- for window lifter from armrest -2- -arrow-.
5. Carefully disengage catches -arrows- using a small screwdriver.
6. Pull out window lifter switch downward.

Installation is the reverse order of removal, while observing the following

1. Press window lifter switch into switch mount until the catches engage.

Door contact switch, removing and installing

The door contact switch is located in door lock and cannot be replaced separately in event of malfunction.

1. Replacing front door lock. See «DOOR LOCK, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/door-locks-anti-theft-systems/#front-doors-central-locking-system-except-cabriolet__door-lock-removing-and-installing) .
2. Replacing rear door lock. See «DOOR LOCK, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#rear-doors) .

Scheme 250

1. Remove front door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Unplug connector -2-.
3. Press center locking switch -1- out from driver's side door trim to interior -arrow-.

Installation is carried out in the reverse order.

Scheme 251

1. Remove rear ashtray.
2. Press catches -arrow A- at right and left outward and swing switch mount toward rear -arrow B-.
3. Unhook switch mount at rear of center console..
4. Disconnect electrical harness connectors
5. Unclip switch -1- from switch mount.

Installation is carried out in the reverse order.

Switch for interior monitoring and towing protection or trunk release switch, removing and installing

Location: Driver's side door trim in storage compartment.

Scheme 252

Scheme 253

1. Remove driver's side door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Unplug connectors.
3. Carefully disengage catches -arrows-.
4. Press switch for interior monitoring and towing protection -1- or trunk release switch -2- out of trim toward rear.

Installation is carried out in the reverse order.

Scheme 254

1. Remove trunk lid lock. See «REAR LID AND REAR LID LOCK, REMOVING, ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#hood-lids-except-cabriolet__rear-lid-and-rear-lid-lock) .
2. Use a flat screwdriver to pry plastic tab -3- off retaining pins -1-.
3. Bend plastic tab fully to rear.
4. Pull contact switch -2- first sideways and then up and out of trunk lid lock.

Install in reverse order, paying attention to the following

Note. Make sure that washers are correctly seated between plastic tab and trunk lid lock.

Taligate contact switch (Avant), removing and installing

Taligate contact switch is installed in tailgate lock and cannot be replaced individually if faulty.

1. Replace rear tailgate lock. See «TAILGATE LOCK, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#hood-lids-except-cabriolet) .

Immobilizer, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. When re-connecting battery, remember to activate vehicle equipment (radio/radio/navigation system, clock, electric windows) in accordance with owner's manual. The immobilizer control module is integrated in instrument cluster, i.e. it is replaced together with instrument cluster. See INSTRUMENT CLUSTER, REMOVING AND INSTALLING .

Malfunctioning transponder and/or lost keys

1. The transponder is integrated in key.
2. The complete key must be replaced if transponder is malfunctioning or if a key is lost. Order replacement key with integrated transponder on the basis of the lock number. Perform adaptation for all vehicle keys.

Note. Use vehicle diagnostic, testing and information system VAS 5051 to perform key adaption.

Reader coil, replacing

1. The reader coil is an integral part of lock cylinder and cannot be replaced separately.
2. The reader coil must be replaced together with lock cylinder. Order a new lock cylinder with vehicle specific locking number via the distributor or importer.

Procedure on replacing lock set or instrument cluster

Note. To guarantee subsequent identification of immobilizer, the following steps must always be performed when replacing lock set or instrument cluster.

Scheme 255

1. Lock set with 2-part sticker NOTE: The sticker on key tag of new locking set serves to identify mechanical locking. Detach right sticker -2- (with bar code) from key ring of new lock set and dispose of it. Pull left sticker -1- (with no bar code) off new key ring and stick it onto customer's key ring in place of old left sticker.
2. Immobilizer control module integrated in instrument cluster The Dealer must establish the PIN number on the basis of the 14-position identification number of the immobilizer/engine control module using direct system checking (as for direct checking of radio code). It is also possible to obtain secret number from appropriate regional sales center or importer. The 14-digit identification number of immobilizer can be read out via self-diagnosis function. Use vehicle diagnostic, testing and information system VAS 5051.

System, testing

Note. The immobilizer is deactivated for a period of 10 minutes after every successful log-in function: The operation of system should not be tested during this period.

1. Switch off ignition for at least 5 minutes.
2. Cover reader coil with a slotted metal plate, for example by positioning appropriate shim on ignition lock and inserting ignition key through hole into ignition lock. or
3. Disconnect wire of reader coil at connector between ignition/starter switch and instrument cluster.
4. Start engine. The engine must not run and warning light must flash.
5. Start self-diagnosis of immobilizer and check DTC memory.

Use vehicle diagnostic, testing and information system VAS 5051.

One of following two fault messages should appear on display

1. Key signal too low or
2. Immobilizer reader coil-D2 Erase DTC memory and end output.

Interior lights, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Scheme 256

1. Hook for front end 3370

Scheme 257

Scheme 258

1. Carefully pull off reading light cover using special tool 3370.
2. Remove screws -arrows-.
3. Swivel front interior light/reading light downward and remove from opening in headliner.
4. Unplug connectors.

Install in reverse order, paying attention to the following

1. Attach interior light and tighten to 3 Nm.

Scheme 259

1. Hook for front end 3370

Scheme 260

Scheme 261

1. Carefully pull off interior light lens using special tool 3370.
2. Remove light bulb -1- or -2- (12 V, 10 W) from clamp-type holder.

Install in reverse order, paying attention to the following

1. Press on interior light lens until it engages.

Scheme 262

1. Hook for front end 3370

Scheme 263

Scheme 264

1. Carefully pull off reading light cover using special tool 3370.
2. Turn bulb -1- or -2- (12 V, 5 W) out of bulb holder.

Install in reverse order, paying attention to the following

1. Press on reading light cover until it engages.

Scheme 265

1. Hook for front end 3370

Scheme 266

1. Carefully pull interior light/reading light out of opening in headliner using special tool 3370.
2. Unplug connector.

Install in reverse order, paying attention to the following

1. Insert interior light in headliner opening and clip in.

Scheme 267

1. Remove rear interior light/reading light, «REAR INTERIOR LIGHT/READING LIGHT, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/communication-devices/#lights-switches-interior-anti-theft-except-cabriolet) .
2. Turn bulb 12 V, 5 W -arrow- at rear of reading light out of bulb holder.

Installation is carried out in reverse order.

Luggage compartment lights (sedan), removing and installing

Note. The luggage compartment lights must be removed in order to replace a bulb. Luggage compartment light bulb 12 V, 5 W

Scheme 268

1. Using a flat-tipped screwdriver, press in retaining tab -1- and pry out luggage compartment light -2-.
2. Unplug connector -3-.
3. Remove bulb from holder at rear of luggage compartment light.

Install in reverse order, paying attention to the following

1. Plug in connector.
2. Insert luggage compartment light in opening and clip in at opposite side.

Scheme 269

1. Hook for front end 3370

Scheme 270

1. Carefully pull cargo area light out of vehicle headliner using hook for front end 3370.
2. Disconnect electrical harness connector.

Install in reverse order, paying attention to the following

1. Insert cargo area light into vehicle headliner opening and clip in.

Scheme 271

1. Position a screwdriver at the cutout of diffusion lens.
2. Carefully pry off diffusion lens for cargo area light using a screwdriver.
3. Remove light bulb (12 V, 6 W) from clamp socket.

Install in reverse order, paying attention to the following

1. Press on diffusion lens for cargo area light until it engages.

Glove box light, removing and installing

Note. The glove box light must be removed in order to replace a bulb. Glove box light bulb 12 V, 5 W

Scheme 272

1. Using a flat-tipped screwdriver, press in retaining tab -1- and pry out glove box light -2-.
2. Unplug connector -3-.
3. Remove bulb from holder at rear of glove box light.

Install in reverse order, paying attention to the following

1. Plug in connector.
2. Install glove box light in opening and clip in at opposite side.

Light for make-up mirror, removing and installing

Note. The illustration shows the light for the make-up mirror on the left-hand side. The right-hand side is symmetrically opposite. Make-up mirror light bulb: 12 V, 5 W

Scheme 273

Scheme 274

1. Carefully pry out the light for the make-up mirror by applying a flat-tipped screwdriver at the slot provided -arrow-.
2. Disconnect harness connector
3. Pull off cover above light bulb -arrow-.
4. Remove light bulb from socket at rear of light for make-up mirror.

Installation is carried out in the reverse order.

Front footwell light, removing and installing

Note. The footwell lights must be removed in order to replace a bulb. Footwell light bulb 12 V, 5 W

Scheme 275

1. Using a flat-tipped screwdriver, press in retaining tab -2- and pry out footwell light -1-.
2. Unplug connector -3-.
3. Remove bulb from holder at rear of footwell light.

Install in reverse order, paying attention to the following

1. Plug in connector.
2. Insert footwell light in opening and clip in at opposite side.

Rear footwell light, removing and installing

Note. The footwell lights must be removed in order to replace a bulb. Footwell light bulb 12 V, 5 W

Scheme 276

Scheme 277

1. Push footwell light towards vehicle exterior -arrow- and detach footwell light at opposite side.
2. Pry off cap -arrows-.
3. Remove bulb from holder at rear of footwell light.

Installation is carried out in the reverse order.

Door safety light and entry light, removing and installing

Note. The door safety light or entry light must be removed in order to replace a bulb. Door safety light bulb: 12 V, 5 W Entry light bulb: 12 V, 5 W

Scheme 278

Scheme 279

1. Using a flat screwdriver, press in catch -1- and pry out door safety light or entry light -2-.
2. Disconnect electrical harness connector -3-.
3. Where installed, carefully pry off cover at door safety light -arrow-.
4. Remove light bulb from socket at rear of door safety light or entry light.

Install in reverse order, paying attention to the following

1. Where installed, install cover onto door safety light.
2. Connect electrical harness connector.
3. Insert door safety light or entry light into opening and engage on opposite side.

Scheme 280

1. Remove door trim: See «FRONT DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) or «REAR DOOR TRIM»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Pull light bulb -1- out of socket at door trim.
3. Disconnect electrical harness connector -2- from socket.

Install in reverse order, paying attention to the following

1. Connect electrical harness connector.
2. Insert light bulb for light in door panel into opening and engage.

Tailgate light (Avant), removing and installing

Note. Remove tailgate light to replace light bulb. Light bulb for tailgate light: 12 V, 6 W

Scheme 281

1. Hook for front end 3370

Scheme 282

Scheme 283

1. Carefully pull off tailgate light in arrow direction using hook for front end 3370.
2. Disconnect electrical harness connector.
3. Pull light mirror -1- out of tailgate light -2-.
4. Remove light bulb of tailgate light from socket.

Install in reverse order, paying attention to the following

1. Connect electrical harness connector.
2. Insert luggage compartment light into opening and engage on opposite side.

Horn, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Scheme 284

1. Remove headlight concerned. See «HEADLIGHTS, SERVICING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__headlights-servicing) .
2. Pull front parking aid sensor out of bumper. See «FRONT PARKING AID SENSOR, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
3. Detach wiring harness and move clear to one side.
4. Unplug connector -2-.
5. Remove nut -1- and detach horn from mount.

Note. Shown in illustration with bumper removed.

Install in reverse order, paying attention to the following

1. Install headlight. See «HEADLIGHTS, SERVICING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__headlights-servicing) .

Heated steering wheel

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Heated steering wheel, servicing

1. Remove airbag unit and steering wheel: See appropriate air bag article in Restraints .
2. Use current flow diagram to check wiring.

Note. Steering wheel must be replaced if heated steering wheel is malfunctioning.

Scheme 285

1. Lift control head out of sun visor at the locations indicated by arrows.
2. Disconnect electrical harness connector.

Installation is carried out in the reverse order.

Scheme 286

1. Remove front bumper: See «FRONT BUMPER, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#bumpers-except-cabriolet) .
2. Remove bolt -2- and unhook retaining bracket.
3. Remove antenna for garage door opener -1- from bumper.
4. Disconnect electrical harness connector.

Installation is carried out in the reverse order.

See also:
• TELEMATICS
• BATTERY DISCONNECT PRECAUTIONS
• FRONT DOOR TRIM
• DOOR LOCK, REMOVING AND INSTALLING
• DOOR LOCK, REMOVING AND INSTALLING
• REAR LID AND REAR LID LOCK, REMOVING, ASSEMBLY OVERVIEW
• TAILGATE LOCK, REMOVING AND INSTALLING
• INSTRUMENT CLUSTER, REMOVING AND INSTALLING
• HEADLIGHTS, SERVICING
• FRONT PARKING AID SENSOR, REMOVING AND INSTALLING
• FRONT BUMPER, REMOVING AND INSTALLING
• REAR INTERIOR LIGHT/READING LIGHT, REMOVING AND INSTALLING