2014 W218 CLS 350 Weird Locking Problem

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Old Jul 18, 2024 | 12:07 PM
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CLS350 W218
Question 2014 W218 CLS 350 Weird Locking Problem

Hello forums, how are we all?

I'm having a weird problem with my CLS. When driving, the internal lock/unlock buttons do not function, the car also has stopped locking automatically when driving (which it used to do). In addition, when I finish my journey and exit the vehicle, I have to wait 30-60 seconds before the keyfob will lock the car eg, get out of the car, close the door, press lock on the fob, nothing. wait 30-60 seconds, press lock, car locks.

I've replaced the main and aux batteries as I was getting lots of undervolt errors via Xentry. Have cleared all stored codes and nothing has come back yet the reoccuring error in the stored codes was:
990915 The output for actuator motor 'Additional door lock' has a malfunction. There is a short circuit to positive or an open circuit

Does this mean I have a faulty door lock actuator (which i assume is the bit that pops up the lock indicator in the door). Is there any way to tell in which door?

Thanks in advance

Last edited by the-snowfury; Jul 18, 2024 at 12:09 PM.
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Old Jul 18, 2024 | 12:12 PM
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I'm clearly stupid. as the error is shown in the section N69/2 - Right Front Door (DCU-RF), so, on a uk car (RHD) is that the driver or passenger side?
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Old Jul 20, 2024 | 07:06 PM
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"on a uk car (RHD) is that the driver or passenger side?"

Drivers door.
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