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Gavin Perry
Gavin Perry, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 2317
Experience:  Licensed diagnostic and repair technician
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2004 w220 a class with srs light on. Assistant: Is anything

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2004 w220 a class with srs light on.
Assistant: Is anything interfering with the seatbelt latch?
Customer: All seat belts ok. Has been to 3 garages now.
Assistant: What is the model of your '04 Mercedes?
Customer: As above W220 S class S320CDI
Assistant: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Been to a Merc independent in Nottingham and 2 local garages here in Bridlington and none can communicate with SRS
Assistant: Anything else you want the Mechanic to know before I connect you?
Customer: No just need it fixed for MOT

Hi my name is ***** ***** I help you with this ?

Customer: replied 2 years ago.
Just need to find somebody ideally local to read SRS error.
It occurred after a flat battery.
Customer: replied 2 years ago.
Not paying£16 for a phone call!

No communication is normally a faulty ECU that is expensive so power supply and ground need to be checked first.

Customer: replied 2 years ago.
Where is the SRS Ecuador located?
Customer: replied 2 years ago.

Under the centre console are you going to test it yourself ?

Customer: replied 2 years ago.
I am an electronics engineer so yes.

Perfect yes its pretty easy to test if it has got what it needs then the ECU is not playing new one required.

Customer: replied 2 years ago.
I guess all I can check easily is power and ground
Customer: replied 2 years ago.
If I replace does it need coding to the vehicle

Basically yes. also you can not use a second hand one ordered to VIN.and yes coding required.

Customer: replied 2 years ago.
Any idea on cost from Mercedes

I can not remember expect £350 ish The ECU is a problem with that generation A class but still pin point it with the tests.

Customer: replied 2 years ago.
Not an A class! It’s an S class W220

Sorry I meant s getting keyboard tired .

Customer: replied 2 years ago.
OK thanks. Can you recommend where to get it fixed. Am on Yorkshire coast.
Bridlington and no dealers here!

You do not need a dealer ring round your locals and ask if they have the software to programme they should have. I am in Preston so I do not know anyone in your area but finding a good tech is getting hard these days.

Customer: replied 2 years ago.
It is useless here. Nobody has yet been able to communicate with the SRS module. All other systems ok and can be read. Am going to Liverpool in a few weeks so could book into anywhere over by you if you can recommend.

I don't really when I had my workshop I didn't get involved with other garages and the chap that purchased my business is useless.

Customer: replied 2 years ago.
Do you think Dronfield is worthwhile?

Dronfield ?

Customer: replied 2 years ago.
Manchester Mercedes parts and dealer

Yes You will have to order the ECU in advanced .

If you need me just get back to me and if you get time feel free to rate me regards Gavin.

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