W211 Estate. Creaky rear.

dursleyman

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2005 E220CDI Elegance Estate, 1977 Triumph TR7 FHC, 1980 Triumph TR7 DHC
When I return to our 2005 W211 estate I often get an odd creaky noise from the rear as I unlock it. Hard to tell if its from the brakes or in the suspension. This is before touching the car at all so no movement instigated by me. What is going on?
 

LostKiwi

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'93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
Are you sure its not the central locking pump or one of the door locks?
 
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dursleyman

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It definitely sounds like it's coming from under the wheel arch somewhere. its like the car was letting go the brakes or something.
 

LostKiwi

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'93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
Your car has SBC - when you unlock it the SBC pump will pump up brake pressure but thats in the front of the car.
You will also have air suspension in the rear and it may be the pump for that. The central locking pump is also in the rear of the car and it could be that.
Without more to go on its impossible to say.
 
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dursleyman

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Found out a bit more about the creak today. Reversing into a tricky parking space I heard the creak noise as I put the footbrake on. Tried it a few more times to check and sure enough it's that same sound every time I pressed the brake. Should I be concerned yet?
 

Wearsafoxhat

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05 E55k Est, 99 SL500, A200
Could be the SBC pump, mine sounds more like a groan than creek when charging. I wouldn't expect it to sound every time you brake though. If it is the SBC pump, I am sure it would display a message to visit workshop asap.


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RUBBER_UNDIES

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Your Mercedes
2003 w211 E270 177 BHP
When I return to our 2005 W211 estate I often get an odd creaky noise from the rear as I unlock it. Hard to tell if its from the brakes or in the suspension. This is before touching the car at all so no movement instigated by me. What is going on?
My w211 freaks at the front when it approaches full lock. I'm used to it now.
 


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