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mptzs90

Member Since: 24 May 2024
Location: Kent
Posts: 93

2015 Defender 90 Puma 2.2 XS CSW Corris Grey

Driver's door lock - whining/whirring

2014 2.2 TDCI with central locking. When I either use the key in the barrel on the driver's side or use the remote, the driver's door sometimes whines and whirs before locking/unlocking. It's been doing this for a few weeks, no better after I tried to clean and lubricate the mechanism in the door (sprayed with silicone). Sometimes it works totally fine and then it won't lock or unlock at all for a few goes. The actuator was replaced with an (I think) genuine one about 16 months ago when it had the same symptoms and it's been fine for most of that time but it's now going again.

I've ordered another new, genuine actuator that I plan to fit myself in the next few days - but wanted to ask what might cause this issue in the first place? I assume the genuine actuators should last longer than this!? Are there other troubleshooting steps I could take to narrow down the problem? My worry is that this new actuator will also struggle in a few months for reasons unknown. Again... I'm assuming it's the actuator given that sorted it last time... but what else should I check?

thanks !

17th Sep 2025 1:06pm

Cragster69

Member Since: 15 Jun 2021
Location: Scotland
Posts: 250

2007 Defender 110 Puma 2.4 CSW Cairns Blue

A few threads that might shed some light on the potential issues and help you solve your problem

https://www.defender2.net/forum/topic63776.html

https://www.defender2.net/forum/topic56085.html

https://www.defender2.net/forum/topic93413.html

https://www.defender2.net/forum/topic92223.html Craig.

“Don't believe everything you read on the internet.” ― Abraham Lincoln

www.scotgrc.co.uk

17th Sep 2025 3:02pm

mptzs90

Member Since: 24 May 2024
Location: Kent
Posts: 93

Thanks - I did search through but you've definitely found a couple of threads I didn't. sounds like I need to run through...
- Wiring (though perhaps unlikely since it's intermitting without movement)
- Barrel lever frozen
- Check fuses - though I'd assume a blown fuse would cause something to stop working completely vs being intermittent
- Bunch of cleaning of the mechanism (I'll try WD40 all over them, wipe down and then silicone grease again) ... maybe this time I'll just completely disassemble and reassemble the mechanism to get it really clean ...
- Remove the lock surrounds in case they're causing resistance (I don't think so because I have the same issue with the door card off)

So of these... I'll check out the barrel lever and see what I find ++ clean it all out again, though I've done that once already.

17th Sep 2025 3:43pm

MadTom

Member Since: 10 Sep 2013
Location: Olomouc
Posts: 684

Just a small note to door lock cleaning - I made it on some cars without removing the lock from doors - it was sometimes succesfull sometimes not. After that, I have removed whole door lock from doors and bathed it in some brake cleaner and later in ultrasonic bath. There was allways huge ammount of dirt, old grease and metal particles washed away from the previously "cleaned" lock. After that and some lubing, locks were working better than new.
I think, to clean them propperly, removing from car is necessary. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo

18th Sep 2025 8:23am

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