Miserable time with engine management light

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Surreyboy

New Member
Joined
Aug 2, 2023
Messages
2
Location
Surrey
Car
Mercedes A Class 180d
Hi,

Over the previous 3 months we have a miserable time with our car. Mercedes A Class 180d 2019.

We originally had the engine management light come on, and were told it was the glowplugs needed replacing, we rang around and found somewhere that did it for £300 cheapest.

We paid, and a few days after the light came back on. Took it to same garage assuming was same issue, and he told us was a new issue, the Nox sensor was gone and needed replacing...

Felt suspiscious would be entirely new issue straight away, but my wife needed the car ASAP so we paid £700 for a new one.

Few days later engine light on again, now we are told it is DPF and to drive on motorway...doesn't clear light. We pay for a DPF specialist who clears the code and regens the DPF, but light is back on again.

Feel a bit sick with all the money we are paying out for a relatively new car, and still having issues. We asked a family friend to run diagnostics, and the codes are:

Engine: P3005E7
OBDII: P24AF Particle Matter Sensor Circuit Range/Performance

Any ideas?
 
A visit to a well respected garage with the required diagnostic equipment and a master-tech capable of understanding the problem. Otherwise you’re just involved in parts darts, through guesswork.
 
P24AF is the code for the NOX sensor. Agree that your garages initial diagnosis may have been wrong.
 
Yep ... failed glowplug(s) don't generally put the EML on (you get the glowplug light coming on after starting).
 
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Hi,

Over the previous 3 months we have a miserable time with our car. Mercedes A Class 180d 2019.

We originally had the engine management light come on, and were told it was the glowplugs needed replacing, we rang around and found somewhere that did it for £300 cheapest.

We paid, and a few days after the light came back on. Took it to same garage assuming was same issue, and he told us was a new issue, the Nox sensor was gone and needed replacing...

Felt suspiscious would be entirely new issue straight away, but my wife needed the car ASAP so we paid £700 for a new one.

Few days later engine light on again, now we are told it is DPF and to drive on motorway...doesn't clear light. We pay for a DPF specialist who clears the code and regens the DPF, but light is back on again.

Feel a bit sick with all the money we are paying out for a relatively new car, and still having issues. We asked a family friend to run diagnostics, and the codes are:

Engine: P3005E7
OBDII: P24AF Particle Matter Sensor Circuit Range/Performance

Any ideas?
Depending where in Surrey you are i would heartily recommend TM Motors in Molesey.
 
TM are good. There's also an excellent bodyshop next door (Vanleigh).

MB Guildford give you an automatic 20% off labour at 3 years old, rising to 40% at 6 years old. Plus 10% off stocked parts. They did the routine servicing on my old SL for 17 years till we moved up to Shropshire.
 
I thought people buy diesels to rack up the miles?

Rack up repair bills more like . It does seem the OP has been very unfortunate in choice of garages , this car is just 4 years old !

Surreyboy . How long have you had it and what is it's service history. ?
 
Definitely find a good mercedes specialist and consider a warranty on this car. Sounds like it has ongoing issues especially with the NOX sensor starting off
 
I thought people buy diesels to rack up the miles?

Rack up repair bills more like . It does seem the OP has been very unfortunate in choice of garages , this car is just 4 years old !

We’ve been talking about this for two decades now. Saving fuel on a diesel is usually a false economy: they have a whole set of serious maintenance issues and costs
 

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