Since buying my A2 TDi MY2001 with OEM reversing sensors it has had an intermittent fault whereby on selecting reverse the continuous warning would sound, as if you were already very close to an obstruction. Then on selecting reverse again would sometimes clear the issue, the system working perfectly, only for the fault to return...all very intermittent.
A check on the garage diagnostic showed no fault codes for the Parking system. Typically it was behaving itself when at the garage.
Looking at the information displayed on the diagnostic showed a response time (in mS) and distance (in cms) for each of the four sensors.
All information displayed was the same for three of the four sensors. The odd one out having a response time several mS longer than the rest.
The garage found a replacement sensor was rather more than £80 from Audi, too rich on a guess that it might be at fault.
However eBay had some compatible (non-OEM) sensors for less than a quarter of the price, more conducive to taking a punt at those prices.
I found replacement under this heading; OEM AUDI A2 A3 A4 A6 A8 S3 S4 S6 RS Q3 Q5 Q7 PDC PARKING REVERSE SENSOR 1PS0804G
So far so good, no failures since, the only downside is it requires painting to match the body colour.
The part number on the sensor removed is 4B0 919 275A.
Hope this helps someone.
A check on the garage diagnostic showed no fault codes for the Parking system. Typically it was behaving itself when at the garage.
Looking at the information displayed on the diagnostic showed a response time (in mS) and distance (in cms) for each of the four sensors.
All information displayed was the same for three of the four sensors. The odd one out having a response time several mS longer than the rest.
The garage found a replacement sensor was rather more than £80 from Audi, too rich on a guess that it might be at fault.
However eBay had some compatible (non-OEM) sensors for less than a quarter of the price, more conducive to taking a punt at those prices.
I found replacement under this heading; OEM AUDI A2 A3 A4 A6 A8 S3 S4 S6 RS Q3 Q5 Q7 PDC PARKING REVERSE SENSOR 1PS0804G
So far so good, no failures since, the only downside is it requires painting to match the body colour.
The part number on the sensor removed is 4B0 919 275A.
Hope this helps someone.
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