How to remove and install the ignition lock cylinder and ignition switch on Audi A4?

The ignition switch which is found under steering column, with switch on the left and key lock cylinder on the right is a cast-metal housing, ignition lock cylinder, and an electrical component, called switch device. Start by removing the cable of the negative post of the battery and take off the steering column covers and the steering column switch assembly. In the case of automatic transmissions in the model, it is necessary to ensure that the shift linkage is in Park before you can proceed. Insert the key into the lock and switch it to the ON position, and then will have to release the retaining clip to take the park/lock cable out of the ignition switch. In case of a key lock cylinder, to take it out, leave the key in the "ON" position and position the access hole with the mark on the trim. The assembly can be pulled out using a straightened large paper clip, taking into consideration that the reader coil is embedded in the lock cylinder and cannot be removed independently of it. The installation of key lock cylinder is done in the same manner as in the "ON" position, just insert it, until it clips as compared to the paper clip, switch the key to the Lock position and it is removed. In the case of the ignition switch, unscrew the electrical connector of large size on the left hand, scrape the locking coating out of the switch retaining screw heads and loosen the screws without their removal, then withdraw the switch out of the ignition assembly. The method to solve the lock housing is to loosen the steering column mounting bolts and move the column downwards ensuring that the mounting brackets are not damaged. To remove the housing cut slots into the shear bolt heads or drill them out and make sure the installation is opposite to the removal tightening the new shear bolts until the heads break off.

Genuine Audi Ignition Lock Cylinder

Ignition Key Lock Cylinder

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23 Ignition Lock Cylinders found

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Audi Cylinder & Keys Part Number: 4D0-857-113-B
$90.68 MSRP: $127.00
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Product Specifications
- Other Name: Cylinder; Lock Cylinder
Fits the following Audi Models:
- A8 | 1997-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997-2003 | Base, L | 8 Cyl 4.2 L GAS
- S8 | 2001-2003 | Base | 8 Cyl 4.2 L GAS
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Audi Steering Lock Part Number: 8B3-905-861
$77.93 MSRP: $109.15
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Product Specifications
- Other Name: Str.Immob; Steering Lock
Fits the following Audi Models:
- RS5 | 2024 | Base | 6 Cyl 2.9 L GAS
- RS5 Sportback | 2024 | Base | 6 Cyl 2.9 L GAS
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Audi Lock Cylinder Part Number: 107-905-855-AF
$173.73 MSRP: $243.32
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Product Specifications
- Other Name: Cylinder; Lock Cylinder
- Replaces: 107-905-855-AG
Fits the following Audi Models:
- Q3 | 2019-2024 | Premium, Premium Plus, Prestige, S-Line Premium, S-Line Premium Plus, S-Line Prestige | 4 Cyl 2.0 L GAS
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Audi Ignition Lock Cylinder Part Number: 8E0-905-855
$142.80 MSRP: $200.00
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Product Specifications
- Other Name: Cylinder; Ignition Cylinder
Fits the following Audi Models:
- A4 | 2002-2003 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 6 Cyl 3.0 L GAS
- A4 Quattro | 2002 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 3.0 L GAS
- A6 | 2002-2004 | Base | 6 Cyl 3.0 L GAS
- A6 Quattro | 2002-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- S6 | 2002-2003 | Avant | 8 Cyl 4.2 L GAS
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Audi Ignition Lock Cylinder Part Number: 107-905-855-CF
$172.54 MSRP: $241.65
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Product Specifications
- Other Name: Cylinder; Ignition Lock Cylinder, Lock Cylinder
- Replaces: 107-905-855-CD
Fits the following Audi Models:
- A3 | 2015-2020, 2006-2013 | Base, Premium, Premium Plus, Prestige, TDI, TDI Premium, TDI Premium Plus, TDI Prestige, Titanium | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
- A3 Quattro | 2015-2020, 2006-2013 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- A3 Sportback e-tron | 2016-2018 | Premium, Premium Plus, Prestige | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
- A4 | 2003-2009 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A4 Quattro | 2003-2009 | Avant, Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A6 | 2003-2004 | Base | 6 Cyl 3.0 L GAS
- A6 Quattro | 2003-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- Allroad Quattro | 2003-2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- Q3 | 2015-2018 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- Q3 Quattro | 2015-2018 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi Lock Cylinder Assy Part Number: 107-905-855-CB
$134.46 MSRP: $188.32
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Product Specifications
- Other Name: Cylinder
- Replaces: 107-905-855-CA
Fits the following Audi Models:
- A6 | 1998-2002 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A6 Quattro | 1998-2002 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- Allroad Quattro | 2001-2002 | Base | 6 Cyl 2.7 L GAS
- S6 | 2002 | Avant | 8 Cyl 4.2 L GAS
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Audi Lock Cylinder Part Number: 107-857-113-JH
$201.11 MSRP: $281.66
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- A4 | 2017-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A4 Quattro | 2017-2023 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A4 allroad | 2017-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Quattro | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A7 Sportback | 2019-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV), 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 | 2018-2023 | Premium, Premium Plus, Prestige, Titanium Premium, Titanium Premium Plus, Titanium Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 PHEV | 2020-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- Q5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q7 | 2017-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Ignition Lock Cylinder Part Number: 4D0-905-855-J
$265.37 MSRP: $371.67
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Product Specifications
- Other Name: Cylinder; Cylinder & Keys
- Replaces: 4D0-905-855-B
Fits the following Audi Models:
- A4 | 1997-2000 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1997-2000 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A6 | 1998-2002 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A6 Quattro | 1998-2002 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- A8 | 1997-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997-1999 | Base | 8 Cyl 4.2 L GAS
- S4 | 2000 | Base | 6 Cyl 2.7 L GAS
- S6 | 2002 | Avant | 8 Cyl 4.2 L GAS
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Audi Ignition Lock Cylinder Part Number: 4D0-905-855-G
$308.50 MSRP: $432.06
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Product Specifications
- Other Name: Cylinder; Ignition Lock Cylinder
- Replaces: 4D0-905-855-D, 4D0-905-855-E
Fits the following Audi Models:
- A4 | 1996-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1996-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A8 Quattro | 2000-2003 | Base, L | 8 Cyl 4.2 L GAS
- Allroad Quattro | 2001-2002 | Base | 6 Cyl 2.7 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
- S8 | 2001-2003 | Base | 8 Cyl 4.2 L GAS
- TT | 2000-2002 | Base | 4 Cyl 1.8 L GAS
- TT Quattro | 2000-2002 | ALMS Edition, Base | 4 Cyl 1.8 L GAS
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Audi Ignition Lock Cylinder Part Number: 8E0-905-855-C
$318.31 MSRP: $445.82
You Save: $127.51 (29%)
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Product Specifications
- Other Name: Cylinder; Cylinder & Keys, Ignition Cylinder
- Replaces: 8E0-905-855-A
Fits the following Audi Models:
- A4 | 2003-2007 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A4 Quattro | 2003-2007 | Avant, Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A6 | 2003-2004 | Base | 6 Cyl 3.0 L GAS
- A6 Quattro | 2003-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- A8 Quattro | 2003 | Base, L | 8 Cyl 4.2 L GAS
- Allroad Quattro | 2003-2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- S4 | 2004-2007 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS
- S6 | 2003 | Avant | 8 Cyl 4.2 L GAS
- S8 | 2003 | Base | 8 Cyl 4.2 L GAS
- TT | 2003-2006 | Base | 4 Cyl 1.8 L GAS
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Audi Control Module Part Number: 8K0-905-852-D
$493.85 MSRP: $691.67
You Save: $197.82 (29%)
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Product Specifications
- Other Name: Steering Lock; Control Box
- Replaces: 8K0-905-852-A, 8K0-905-852-C
Fits the following Audi Models:
- A4 | 2009-2012 | Base | 4 Cyl 2.0 L GAS
- A4 Quattro | 2009-2012 | Avant, Base | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- A5 | 2010-2012 | Cabriolet | 4 Cyl 2.0 L GAS
- A5 Quattro | 2008-2012 | Base, Cabriolet | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- Q5 | 2009-2012 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- S4 | 2010-2012 | Base | 6 Cyl 3.0 L GAS
- S5 | 2008-2012 | Base, Cabriolet | 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- allroad | 2013-2016 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L FLEX
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Audi Control Module Part Number: 8K0-905-852-E
$493.85 MSRP: $691.67
You Save: $197.82 (29%)
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Product Specifications
- Other Name: Steering Lock; Control Box
Fits the following Audi Models:
- A4 | 2013-2016 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2013-2016 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- A5 | 2013-2014 | Cabriolet | 4 Cyl 2.0 L GAS
- A5 Quattro | 2013-2017 | Base, Cabriolet, Premium, Premium Plus, Prestige, Sport | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- Q5 | 2012-2017 | Hybrid Prestige, Premium, Premium Plus, Prestige, TDI Premium Plus, TDI Premium Plus S-Line, TDI Prestige, TDI Prestige S-Line | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L DIESEL, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- RS5 | 2013-2015 | Base, Cabriolet | 8 Cyl 4.2 L GAS
- S4 | 2013-2016 | Base, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2013-2017 | Base, Cabriolet, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- SQ5 | 2014-2017 | Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- allroad | 2013-2016 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L FLEX
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Audi Ignition Lock Cylinder Part Number: 191-905-855
$33.91 MSRP: $45.22
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Product Specifications
- Other Name: Cylinder; Cylinder & Keys
Fits the following Audi Models:
- 4000 Quattro | 1984-1985 | S | 5 Cyl 2.2 L GAS
- 5000 | 1984-1985 | S Turbo | 5 Cyl 2.2 L GAS
- Coupe | 1984 | Base | 5 Cyl 2.2 L GAS
- Quattro | 1984-1985 | Base | 5 Cyl 2.2 L GAS
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Audi Cylinder & Keys Part Number: 893-857-113
$33.13 MSRP: $53.00
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- 100 | 1989-1991 | Base, E | 5 Cyl 2.3 L GAS
- 100 Quattro | 1989-1991 | Base | 5 Cyl 2.3 L GAS
- 200 | 1989-1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1989-1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- 80 | 1988-1992 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 80 Quattro | 1988-1992 | Base | 5 Cyl 2.3 L GAS
- 90 | 1988-1991 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 90 Quattro | 1988-1991 | 20v, Base | 5 Cyl 2.3 L GAS
- Coupe Quattro | 1990-1991 | 20v | 5 Cyl 2.3 L GAS
- V8 Quattro | 1990-1994 | Base | 8 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
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Audi Ignition Lock Cylinder Part Number: 443-905-855-A
$90.44 MSRP: $126.67
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Product Specifications
- Other Name: Cylinder; Cylinder & Keys
Fits the following Audi Models:
- 5000 | 1984-1988 | CS, CS Turbo, S, S Turbo | 5 Cyl 2.2 L GAS, 5 Cyl 2.3 L GAS
- 5000 Quattro | 1986-1988 | CS, S | 5 Cyl 2.2 L GAS, 5 Cyl 2.3 L GAS
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Audi Ignition Lock Cylinder Part Number: 4A1-905-855
$96.39 MSRP: $135.00
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Product Specifications
- Other Name: Cylinder; Ignition Lock Cylinder
Fits the following Audi Models:
- Cabriolet | 1994-1998 | Base | 6 Cyl 2.8 L GAS
- Coupe Quattro | 1990-1991 | 20v | 5 Cyl 2.3 L GAS
- V8 Quattro | 1990-1994 | Base | 8 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
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Audi Ignition Lock Cylinder Part Number: 4A0-905-855-A
$105.67 MSRP: $148.00
You Save: $42.33 (29%)
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Product Specifications
- Other Name: Cylinder; Ignition Lock Cylinder
Fits the following Audi Models:
- 100 | 1992-1994 | Base, CS, S | 6 Cyl 2.8 L GAS
- 100 Quattro | 1992-1994 | CS | 6 Cyl 2.8 L GAS
- A6 | 1995 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1995 | Avant, Base | 6 Cyl 2.8 L GAS
- S4 | 1992-1994 | Base | 5 Cyl 2.2 L GAS
- S6 | 1995 | Avant, Base | 5 Cyl 2.2 L GAS
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Audi Ignition Lock Cylinder Part Number: 893-905-855-A
$105.67 MSRP: $148.00
You Save: $42.33 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder; Ignition Lock Cylinder
Fits the following Audi Models:
- 100 | 1989-1991 | Base, E | 5 Cyl 2.3 L GAS
- 100 Quattro | 1989-1991 | Base | 5 Cyl 2.3 L GAS
- 200 | 1989-1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1989-1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- 4000 | 1984-1987 | S | 4 Cyl 1.8 L GAS
- 4000 Quattro | 1984-1987 | CS, S | 5 Cyl 2.2 L GAS
- 80 | 1988-1992 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 80 Quattro | 1988-1992 | Base | 5 Cyl 2.3 L GAS
- 90 | 1988-1991 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 90 Quattro | 1988-1991 | 20v, Base | 5 Cyl 2.3 L GAS
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Audi Ignition Lock Cylinder Part Number: 4A1-905-855-A
$107.79 MSRP: $150.97
You Save: $43.18 (29%)
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Product Specifications
- Other Name: Cylinder; Cylinder & Keys
Fits the following Audi Models:
- 80 | 1988-1992 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 80 Quattro | 1988-1992 | Base | 5 Cyl 2.3 L GAS
- 90 | 1993-1995, 1988-1991 | Base, CS, S, Sport | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- 90 Quattro | 1993-1995, 1988-1991 | 20v, Base, CS, Sport | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- Cabriolet | 1994-1998 | Base | 6 Cyl 2.8 L GAS
- Coupe Quattro | 1990-1991 | 20v | 5 Cyl 2.3 L GAS
- V8 Quattro | 1990-1994 | Base | 8 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
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Audi Cylinder & Keys Part Number: 4A1-905-855-C
$195.64 MSRP: $274.00
You Save: $78.36 (29%)
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Product Specifications
- Other Name: Cylinder
Fits the following Audi Models:
- A6 | 1996-1998 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1996-1998 | Avant, Base | 6 Cyl 2.8 L GAS

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Audi Ignition Lock Cylinder

The Audi Ignition Lock Cylinder is a very important part of your vehicle. Therefore, it has to be maintained in good condition to avoid performance issues and comfortable driving. And these regular checks and replacements will ultimately save you some big repair costs. It is better to choose OEM parts when it comes to the time for fixing them. Why? Because they fit perfectly well and ensure safety. For people who prefer doing their maintenance, the genuine Audi Ignition Lock Cylinder is quite perfect. At AudiPartsGiant.com, we specialize in genuine Audi Ignition Lock Cylinders only. Also, we offer an extensive online catalog with many categories, ample stock, and secure shopping. The Audi Ignition Lock Cylinder is shipped directly from authorized Audi dealers at competitive prices. So trust us, and we will give you nothing but superior service. Depend on us for all your genuine parts needs, and then we will keep your automobile moving smoothly.

Audi Ignition Lock Cylinder Parts and Q&A

Ignition Lock Cylinder
107-905-855-CF
Q: How to remove and install the ignition lock cylinder and ignition switch on Audi A4?
A:
The ignition switch which is found under steering column, with switch on the left and key lock cylinder on the right is a cast-metal housing, ignition lock cylinder, and an electrical component, called switch device. Start by removing the cable of the negative post of the battery and take off the steering column covers and the steering column switch assembly. In the case of automatic transmissions in the model, it is necessary to ensure that the shift linkage is in Park before you can proceed. Insert the key into the lock and switch it to the ON position, and then will have to release the retaining clip to take the park/lock cable out of the ignition switch. In case of a key lock cylinder, to take it out, leave the key in the "ON" position and position the access hole with the mark on the trim. The assembly can be pulled out using a straightened large paper clip, taking into consideration that the reader coil is embedded in the lock cylinder and cannot be removed independently of it. The installation of key lock cylinder is done in the same manner as in the "ON" position, just insert it, until it clips as compared to the paper clip, switch the key to the Lock position and it is removed. In the case of the ignition switch, unscrew the electrical connector of large size on the left hand, scrape the locking coating out of the switch retaining screw heads and loosen the screws without their removal, then withdraw the switch out of the ignition assembly. The method to solve the lock housing is to loosen the steering column mounting bolts and move the column downwards ensuring that the mounting brackets are not damaged. To remove the housing cut slots into the shear bolt heads or drill them out and make sure the installation is opposite to the removal tightening the new shear bolts until the heads break off.