Cheap Mercedes-Benz CLS Door Lock Mechanism

The CLS is a four-door saloon (sold as a four-door coupe), so you need to specify which generation your car is, which side the door is on — NS (nearside, passenger left) or OS (offside, driver right) — and whether it is a front or rear door. The CLS runs across two main generations: the first-generation C219 (2004–2010) and the second-generation C218 (2011–2018, with a facelift around 2014). Engine type makes no difference to which lock mechanism fits, so just focus on the generation, door position, and side when contacting a breaker.

These two cars fall either side of the C218 facelift, which arrived around 2014, so there is a generation boundary to be aware of. Both are C218 second-generation cars, but whether the lock mechanism itself changed across the 2014 facelift is something you should confirm with the breaker against your exact registration rather than assume. Make sure you also tell the breaker which door position (front or rear) and which side (NS or OS) you need.

The C219 and C218 are distinct generations with different body structures, so a door lock mechanism from one is very unlikely to fit the other. You should treat these as non-interchangeable and search specifically for a part from the correct generation. Always quote your registration to the breaker so they can verify the exact part required.

Trim level does not affect door lock mechanism fitment on the CLS; the mechanism is determined by the generation, door position (front or rear), and side (NS or OS). AMG Line and standard trims share the same door structure, so you are not restricted to sourcing from the same trim. The only cosmetic difference you might notice on a used part is interior door furniture colour or finish, but that has no bearing on whether the mechanism itself fits.

Yes, front and rear door lock mechanisms are different parts and are not interchangeable, so you must specify which door position you need when asking a breaker for a quote. Within each position, you also need to confirm the side — NS (nearside, passenger left) or OS (offside, driver right) — as left and right mechanisms differ. Getting both the position and side correct is the most important step in making sure you order the right part.

No — engine type, fuel type, and gearbox have no bearing on door lock mechanism fitment whatsoever. What matters is the generation (C219 2004–2010 or C218 2011–2018), whether it is a front or rear door, and the side (NS or OS). You can confidently search across different engine variants of the same generation without any fitment concern.