my first merc and i need help

[magners]

i got my first merc a 2003 c240 and i have a problem. every time i drive it, it goes into limp home mode.can anyone help me.thanks guys but its not the mas air flow apparently something to do with aoto gear box,local mercedes dealer dont know what the problem is and want to replace gear box at a great cost

 

[Blobcat]

Hi & Welcome,

Mas air flow meter is a very common problem that results in limp home mode.

 

[jberks]

take it to a dealer or, better still, a properly equipped independent specialist and get the error codes read. Chances are that Blobcat's assessment is spot on (If I had to guess I'd go the same way) but there is a small chance it's something else in which case you may be wasting your money.

However, this is based on that fact that the MAS for the 240 cost me over £220 a couple of years ago so the diagnostic was worth it, but there are rumours that its such a common fault that the prices are more sensible now and they may even be cheaper than the diagnostic charge so its worth getting a price first. Also, Bosch do a repair kit which could be cheaper still.

 

[Neil Plumridge]

I had one of these go on my Audi. With the Audi I was able to simply unplug it (there is a connector a bit like a printer connector, but I have no idea where it is on a Merc) and the car then runs fine. It can mess up your economy a bit and I wouldn't recommend running like it for a very long time but I ran mine with this disconnected for about a week with the blessing of the Audi main dealer with absoluletly no problem. Again, they had recently dropped the price from about £300 to £115. Takes about 5 mins to fit.

btw, I have an 03 C240 also, so I'd be keen to hear the outcome of this.

 

[magners]

I had one of these go on my Audi. With the Audi I was able to simply unplug it (there is a connector a bit like a printer connector, but I have no idea where it is on a Merc) and the car then runs fine. It can mess up your economy a bit and I wouldn't recommend running like it for a very long time but I ran mine with this disconnected for about a week with the blessing of the Audi main dealer with absoluletly no problem. Again, they had recently dropped the price from about £300 to £115. Takes about 5 mins to fit.

btw, I have an 03 C240 also, so I'd be keen to hear the outcome of this.

i will keep u posted

 

[magners]

f a o blobcat

would u please reread my thread thank you

 

[magners]

f a o blobcat

would u please reread my thread

 

[Blobcat]

search the forums, few issues with electrical connections to gearbox.