Mercedes-Benz ML Central Locking Motor Replacement Parts
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A buyer's guide to used Mercedes-Benz ML central locking motor
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:
- Specify front/rear and left/right
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Fitment questions
Will a central locking motor from an older W163 ML fit my W164 ML?
No — the W163 (1998–2005) and W164 (2005–2011) are completely different generations with different door structures, wiring, and actuator designs, so the central locking motors are not interchangeable. You'll need to source a motor specific to your generation. Always confirm the exact part against your registration with the breaker before buying.
Does the trim level affect which central locking motor I need — for example, ML270 CDI versus ML500?
No — trim and engine variant do not affect the central locking motor on the Mercedes-Benz ML; the actuator is part of the door assembly and is the same across engine variants within the same generation. You may find minor differences in door furniture between spec levels, but the motor itself should interchange. Confirm the generation and model year with the breaker to be sure.
I have a 2008 W164 ML — will a motor from a pre-facelift 2006 model fit?
The W164 ran from 2005 to 2011 with a facelift in 2008, but the central locking motor is a mechanical actuator within the door and was not typically changed as part of the facelift refresh. Parts from a 2006 W164 are likely compatible with a 2008 W164, but because fitment across a facelift boundary can occasionally differ, you should confirm this with the breaker against your specific registration before purchasing.
Can I use a central locking motor from a W164 on my W166 ML?
The W166 replaced the W164 from 2011 onwards and is a distinct platform with different door assemblies, so a W164 motor will not cross over to the W166. Source a part from a W166 breaker vehicle to match your car. Confirm the exact year against your registration with the breaker.
Does it matter whether the motor is from the NS or OS door?
Yes — the near-side (passenger) and off-side (driver) door actuators can differ in design or orientation, and the driver's door often integrates additional functions such as deadlocking or a more complex mechanism on the ML. Always specify to the breaker which door you need the motor for, as well as your generation and model year, to avoid sourcing the wrong unit.
Are there any ML variants where a central locking motor was not fitted at all?
All Mercedes-Benz ML variants across the W163, W164, and W166 generations came with central locking as standard across the full model range, so every variant should have central locking motors fitted to each door. There are no known engine or drivetrain configurations that delete this feature. If you are having locking issues, the fault could also lie with the control module or wiring rather than the motor itself, so it is worth having the system diagnosed before ordering parts.