S9KSY
Active Member
Mercedes Calls it “Lock Cylinder”
Part Number 126 460 02 04 which is £65 + VAT (£76.38)
The shroud Mercedes calls it “Cover”
Part Number 124 462 28 23 which is £10.40 + VAT (£12.22)
Mercedes Croydon quoted £50 to replace it, but only if the key turns the ignition on.
My description below only applies for when you are able to turn the key on.
If you can’t turn the key, keep trying until you succeed (in anything between minutes and days).
I triumphed in turning the jammed key after 45 minutes of jiggling. The success was possibly after I inadvertently succeeded in breaking the inside tongue.
Once your key starts hesitating or jamming, it would be a good idea to replace the cylinder.
Mercedes dealer will be able to order (1-2 weeks) a cylinder that your old keys still fit. Otherwise, you will have to carry 2 keys (one for ignition and another for doors/boot)
The dealer will want to see your V5 and proof of identity to order for you. Non-refundable payment in advance.
The dealer will not give you the ordered key cylinder unless he sees your car. If it is not driveable, you either have to tow it to the dealership or show him a DVLA SORN declaration. Vowing, pleading and begging are futile.
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