Mercedes CLA exhaust actuator flap issue

Mercedes CLA exhaust actuator flap issue

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Toilet Duck

Original Poster:

1,350 posts

192 months

Saturday 2nd October 2021
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Afternoon all,

Hoping someone on here can help with an issue some family friends have with their 2015 Mercedes CLA diesel. Dash is showing an error code and they took it to a main dealer who diagnosed a fault with the "exhaust flap actuator". Apparently this is part of the AMG pack the car has, god knows why you need an exhaust flap on a diesel car but there you go. Having charged around £120 for the privilege of plugging the car in to get the code read, they have quoted circa £600 to replace the actuator. I'd like to help them out if I can, I'm hoping the actuator valve can either be had considerably cheaper elsewhere and I will fit it for them, or even better if there is a way to bypass the actuator and fit some sort of blanking plug/termination block to the loom so that the car thinks the valve thing is "ok" and won't throw up an engine management light on the dash. Apparently the car drives fine with no difference, the main concern is that the constant dash light will obviously hide any other faults that come up and will be a problem come MOT time.

I've been googling but struggled to find any cheaper suppliers of the part, or a way to bypass the valve specifically for a CLA diesel. It seems that some of the petrol AMG's can easily bypass the valve just by disconnecting the loom to the valve and no error code is thrown, but I cannot find anything specific to the CLA.

I would be very grateful for any help or advice smile

TarquinMX5

2,058 posts

87 months

Saturday 2nd October 2021
quotequote all
It seems to be a common fault; yet another solution to a problem that didn't exist.

I haven't read through all of the posts in the link below, but if you go onto that forum and search 'exhaust flap', or similar, there are numerous references to it.

https://forums.mbclub.co.uk/threads/mercedes-a-cla...


Toilet Duck

Original Poster:

1,350 posts

192 months

Sunday 3rd October 2021
quotequote all
TarquinMX5 said:
It seems to be a common fault; yet another solution to a problem that didn't exist.

I haven't read through all of the posts in the link below, but if you go onto that forum and search 'exhaust flap', or similar, there are numerous references to it.

https://forums.mbclub.co.uk/threads/mercedes-a-cla...
Many thanks indeed, I will have a read through the link and a search on that forum smile

Glen1969

1 posts

1 month

Tuesday 29th October
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Hi can anyone tell me how to disconnect or bypass the exhaust valve system on a cla 220 amg cdi. It’s a 2013 plate and the engine management light is on