Second Hand Mercedes-Benz CLA Central Locking Motor

The Mercedes-Benz CLA has two main generations: the first-generation C117 (2013–2019, facelifted 2016) and the second-generation C118 (2019 onwards). Central locking motors are generally generation-specific, so a motor from a pre-2019 CLA is unlikely to be a direct fit on a post-2019 car and vice versa. Even within the C117 generation, the 2016 facelift may have brought minor changes, so always confirm with the breaker against your registration number before buying.

No — the engine variant does not affect which central locking motor your CLA uses. Whether your car is a 180, 200, 220d, or AMG-engined model, the door locking mechanism is determined by the body generation (C117 or C118), not the drivetrain. Focus on matching the generation and confirming the donor car's registration with the breaker rather than worrying about engine codes.

Trim level — whether your CLA is a standard, Sport, AMG Line, or Edition spec — does not affect the central locking motor itself, as this is a body-shell component common across the range within a generation. You may find that higher-spec cars have additional features like powered boot release or comfort-closing, so check with the breaker that the donor car's spec matches yours if you suspect your car has one of those extras. The core door motor should otherwise interchange freely across trim levels within the same generation.

The CLA shares its platform with the A-Class (W176/W177) and B-Class, so door locking motors from the same-generation A-Class may well be compatible, particularly on the C117 CLA and W176 A-Class which were produced alongside each other. However, door architecture and latch mechanisms can differ between models even on shared platforms, so this is not something to assume — confirm part numbers with the breaker against both registrations before purchasing.

Yes, it does matter — central locking motors are typically handed (driver's side NS versus passenger's side OS) and position-specific (front door versus rear door), so you need to match both the side and the door position to your requirement. When contacting a breaker, specify nearside rear or offside rear clearly to avoid being sent the wrong unit. Always cross-reference the part number from the donor vehicle against yours if possible.

Both the 2015 and 2017 CLA fall within the first-generation C117 body, with the facelift arriving in 2016, but whether the locking motor changed across that facelift boundary is not something to assume without checking. The door skins and internals were revised on the facelift model, and latch or motor designs may have been updated at the same time. Confirm the part number on the donor car against your own with the breaker before committing to a purchase.