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No two central locking motors are quite the same across different vehicles, so getting the specifics right matters when you buy used, second hand or a replacement. Answer a few quick questions below and breakers will only quote if they have the exact matching part in stock:
Yes, the Peugeot 508 does use central locking motors — small electric actuator motors fitted inside each door lock mechanism to drive the locking and unlocking action. If one door stops locking or unlocking with the remote or interior button while the others work fine, a failed central locking motor in that door is the most common cause. You'll typically need to identify which door is affected (NS front, OS rear, and so on) as each door has its own unit.
The 508 ran in two distinct generations — Mk1 from 2011 to 2018 and Mk2 from 2018 onwards — and the door architecture changed significantly between them, so parts from one generation are very unlikely to fit the other. Stick to sourcing from the same generation as your car. Confirm the exact generation and door position with your breaker against your registration to be sure.
No — the engine variant makes no difference to central locking motor fitment on the 508. The door lock actuators are the same regardless of whether your car is a diesel, petrol, or plug-in hybrid. What matters is the generation of the car and which door the motor is from.
The door lock actuators used in the SW estate and the saloon/hatchback body styles are generally the same units for the equivalent doors (front doors typically interchange within the same generation), but boot or tailgate lock actuators will differ between body styles. Confirm with the breaker which specific door you need and your body style, as there can be minor variations even within a generation.
Trim level does not affect central locking motor fitment on the 508 — the door lock actuators are the same across Active, Allure, and GT Line trims within the same generation. You may find that higher trims have additional features like electric folding mirrors or memory seats, but the central locking motor itself is unaffected by those additions. Any cosmetic differences between trim levels are irrelevant to this part.
This is an important boundary to watch: the Mk1 508 ran up to 2018 and the all-new Mk2 launched in 2018, meaning cars registered in 2018 could be either generation depending on when in that year they were built. A 2017 car is firmly Mk1, but a 2018 or 2019 donor could be either generation, and the two are very unlikely to be compatible. Always confirm the generation of both cars with your breaker against the registrations before purchasing.