Ignition lock AUDI A6 1998

OEM: 4B0905851C-2

Disassembled car photo

Engine running

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Details for this exact part

Code
4B0905851C-2
OEM
4B0905851C-2
Condition
Used
Availability
1 in stock - ready to ship
Make, model
AUDI A6 1997-2001
Year
1999 2000
Engine
Petrol 2.4L 121KW - ARJ Diesel 2.5TDI 110KW - AKN
VIN
WAUZZZ4BZXN089180 WAUZZZ4BZYN089879

What is this part and why does it matter?

The ignition switch (or ignition lock assembly) accepts the key or fob and controls power to the starter and various electrical circuits when starting the engine.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Key won’t turn or turns with difficulty
  • Vehicle intermittently loses power to accessories or the engine
  • Key turns but nothing happens (no crank, no power)

Installation information

Requires removing the steering column shroud for access — key programming or coding may be needed after replacement.

Frequently asked questions

This points to worn internal contacts within the switch that no longer make reliable connection, even though the mechanical turning action still feels normal.

Donor vehicle description

VIN
WAUZZZ4BZXN089180 WAUZZZ4BZYN089879
Make, model
AUDI A6
Year
1999 2000
Engine
Petrol 2.4L 121KW - ARJ Diesel 2.5TDI 110KW - AKN
Transmission
5-speed Mechanic - DWK 5-speed Automatic - ETZ
Drive
Front
Equipment
LHD
Colour
3X / Y1T G5 / Y7L

467 parts from this car

  • Engine control unit AUDI A6 1998
  • Speedometer AUDI A6 1998
  • Climate control unit AUDI A6 1998
  • Front right door lock AUDI A6 1998
  • Front left door lock AUDI A6 1998
  • Rear right door lock AUDI A6 1998
  • Front right door lock AUDI A6 1998
  • Air conditioner radiator AUDI A6 1998
  • Rear left lamp AUDI A6 1998
  • Car part AUDI A6 1998
  • Shift cable AUDI A6 1998
  • Steering gear AUDI A6 1998

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