#127
VW Transporter T5 2003–2010 Ignition Lock Barrel With Key / Steering Lock Housing
Part Number: 4B0905851Q
Removed from a Volkswagen Transporter T5 1.9 TDI (BRS engine, 2009).
Genuine ignition lock barrel with key and steering lock housing, designed to allow vehicle start-up and provide steering lock security.
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Condition:
Used item, may have minor marks, scratches or signs of wear due to storage and age. Fully working unless stated.
Supplied with matching key (as stated).
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Important:
Please ensure the part number 4B0905851Q matches your existing unit before purchasing.
⚠️ Ignition systems may require coding / immobiliser pairing depending on vehicle setup.
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Compatibility:
Fits VW Transporter T5 models (2003–2010)
Also compatible with other VW / Audi / Seat / Skoda models using the same platform.
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Position:
Steering column – ignition housing / key barrel assembly
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Function:
* Allows engine start via key
* Activates ignition switch positions
* Locks steering column when key removed
* Works with immobiliser system for security
The unit combines ignition switch and steering lock housing in one assembly.
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Technical Info:
* Type: ignition lock barrel + steering lock housing
* OEM reference: 4B0 905 851 Q
* 6-pin electrical connection (varies by version)
* Compatible with manual transmission setups
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Common Fault Symptoms:
* Key not turning or sticking
* Ignition not engaging
* Steering lock jammed
* Intermittent starting issues
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Additional Info:
* Also referred to as ignition barrel / ignition switch / steering lock housing
* Often replaced due to wear, key damage or internal failure
* Must be installed carefully – incorrect handling can damage internal lock mechanism
Brand: Volkswagen
Type: Switch Assembly
Manufacturer Part Number: 4B0905851Q
Country of Origin: Germany