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Sorry to hear on your troubles Claudster! It's disgusting and an outright lie that Audi claim that they are unaware of the issue. I believe a number of people on this forum have informed Audi of the issue. Maybe someone can consult a class action lawyer/motoring organsiation to push our cases? All Audi need to do is send out a recall notice and update the onboard computer to change the message so when the sensor fails, it should notify the driver to stop driving, park up and contact the dealer (not that it's ok to continue driving as it currently does).

Four months on now and sensor seems ok. I don’t think it is related but I am getting three beeps which sound like they are coming from the back seats/boot area. No warning messages or lights on dash. Only happens when the car is moving.

Could also be a failed antenna.

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 Running on veg oil is good as long as the conversion has been done properly. No there shouldn't be an egr but it will have a catalytic converter.

Have you driven it for a while yet? Think it takes a bit of driving for it to go off?

Hi, After reading all all the posts with regards to the stop start issue, here's an update. I have a 2017 A4 1.4 tfsi, just achieved 25000 miles.. had the stop start/servo issue so took it for diagnostic check. Result was, sensor and abs internal fault to a cost of £3300 to rectify.. Complained to the audi executive who has basically said hard luck, they no knowledge of it being a reoccurring problem and there would be no good will.. I have stated how unimpressed I am with his answer, and disappointed at how out of touch he is with what's going with regards to this fault, and will be passing it on to bbc watchdog to see what their findings are. In the mean time, replaced the sensor at a cost of £83 and the mechanic can get the abs rebuilt for £225 if it's required. The sensor has cured the stop start, but getting the warning with regards to the brakes on start up. Most disappointed with Audi to say the least, but I'm not going to let this go.. it's a major safety issue, and Audi don't care.