acer54

Both my front and rear parking sensors are not working, I get an audible warning when selecting drive or reverse and the two red leds are showing on the display panels (they go off above 10mph).
Diagnostics shows all sensors front and rear to be bad, is this possible or is it something else?
Before I buy 12 new sensors hopefully I will be pointed in the right direction.

dr914

they could be out of alignment or the bracket in the bumper could be broken.

acer54

Looks like the bumpers will have to be removed.

Andy E.

Damaged one on the front-left side this winter by knocking on it while trying to remove some ice. Really dumb move on my part...
Has anybody replaced one of these front sensors on a 957 and would you happen to have the VW part number handy? FYI: The sensors on the 955 are not the same as on the 957.
I'd like to tackle this repair on the weekend but I don't feel like R & R'ing the front bumper two times in a row...
Thanks!

DWPC

The odds of all ten sensors going out is astronomical. What diagnostics reader did you use? Did you accidentally turn the system off at the switch? Did you check the fuse? It's almost certainly a Bosch controller or ECU issue. Unless your diagnosis was with a Porsche reader it's worth an hour of diagnosis with Porsche or Durametric eqpt before throwing new components at the problem. I love those sensors and would take them over a camera like on my MB any time.

Andy E.

I used the ICar Scan tool and the diagnosis was front-left. I then used a stethoscope on each of the front sensors to verify the scanner's findings. Did I not say in my post that the front-left sensor was damaged?
I love the sensors too but I'm sure that knocking at them in the dead of winter to remove ice may be misconstrued as abusive behavior....