TPMS, ACC fault etc. how to find which sensor ?

[roydonaldson]

Hi there,

I have the standard Christmas tree effect of faults, starting with TPMS, ACC, etc. on my S3. I'm presuming that it is one of the wheel rotation
sensors that has gone.

But, using a number of the off the shelf scanning apps, it is not telling me which wheels sensor is faulty.

Any idea on how I can find out which exact sensor has gone ?

Thanks, Roy.

 

[J0N]

VCDS will tell you if you can get access to it.


Sent from my iPhone using Tapatalk

 

[roydonaldson]

Thanks. I think I had it about 4 pcs ago, but don't anymore.

Want site if one of the phone apps could do it at all?

 

[rhubarb4]

Thanks. I think I had it about 4 pcs ago, but don't anymore.

Want site if one of the phone apps could do it at all?

Only one I’ve used with the phone is OBD 11, very similar to VCDS but more user friendly.

 

[roydonaldson]

and, looks like the car has stopped doing it now and has gone back to normal. Hmmmmm

 

[stubbly46]

and, looks like the car has stopped doing it now and has gone back to normal. Hmmmmm

A wheel speed sensor will do that. I have OBDEleven and that will tell you which sensor it is. Scanning your car for faults will bring up all of your faults but they will have a time stamp for each one so if you locate the one with the earliest trigger to the seconds it will point to the cause of the multiple follow ons. Only use well known reputable sensors to prevent recurrence.

 

[roydonaldson]

Does OBDEleven actually tell you which sensor has gone ? I've scanned the car with a couple of the other scan tool apps and there are no error codes listed for speed sensors even when the car was faulting.

 

[stubbly46]

Does OBDEleven actually tell you which sensor has gone ? I've scanned the car with a couple of the other scan tool apps and there are no error codes listed for speed sensors even when the car was faulting.

Yes it will. It is a very capable tool and similar in abilities to VCDS but you only need your phone (iPhone or anndroid) and dongle. To change coding etc you will need a pro plan but for diagnostics you don’t.
Scan attached from a Golf mk7

 

[roydonaldson]

Thanks that's very useful. I'll go check it out.

Shame, as when I had a S3 and a TT I had full VCDS. But then had a kid and changed the cars. I've now got a S3 back, but a good number of laptops later don't have VCDS anymore.

 

[stubbly46]

Thanks that's very useful. I'll go check it out.

Shame, as when I had a S3 and a TT I had full VCDS. But then had a kid and changed the cars. I've now got a S3 back, but a good number of laptops later don't have VCDS anymore.

I bought it when my wife had the Xmas tree display to sort the fault out. I had the lifetime pro account which they don’t offer anymore, now it’s an annual subscription. I’ve scanned over a dozen cars for friends and family and made alterations to the coding as I’ve learnt more about it. I’ve got a fl S3 8V and recently coded in a new battery, audible lock/unlock, 5 flashes on comfort indicators, coded out the start/stop, although I now use a loom for this as it gives me options to use it if I need to.
You could download the OBDEleven VAG app and have a look at the format of it, bottom right of the opening page and select the 3 dots will show all the supported vehicles.