I own a Seat Alhambra TDi Tiptronic SE. The parking sensors have stopped working and only emit a short continuous humming sound when the ignition is switched on; I looked in the fusebox for the symbol for the parking sensors' fuse (letter 'P' with a graphic symbol of soundwaves) but it does not appear on the fusecard. The fusecard has these two sets of digits printed in its upper right-hand corner: 7M3 010 258 C and: YM21 42A089 AA

I recently had to change the fuse that goverrns the headlamp washers; we had been in Germany and Austria one month ago, when the parking sensor problem started, so I wonder if maybe the extreme cold has caused a problem (-20 degrees). The water in the pipes feeding the headlamp washers froze and thereby expanded, causing the covers that normally lie flush with the bumper surface to rise up. I guess that their fuse may have blown because the headlamp jets' mechanisms wouldn't move because the water had frozen. Maybe the parking sensors' fuse has blown too, but I can't find it; incidentally, I have not struck anything and damaged the sensors, and they look fine. Is a fuse or relay hidden away somewhere? The Owner's Manual doesn't tell you anything useful, and the symbol for the sensors listed on page 3.67 of the Manual simply isn't shown anywhere on the fusecard 'map' of fuse locations and functions. Help!

Stephen Barber, March 2009

Don't know the answer yet, but I have the same model, registered 2008 and strangely both my parking sensors and headlight washers have failed at the same time? I agree that the content of the owners manual is designed to lead you to the nearest Seat Dealer but will do my best to avoid paying over the odds to get this sorted. For a car with just 29,000 on the clock and one very careful owner (me) its dissapointing to say the least. Hopefully just the fuse (if I can find it!)

Rich, October 2012

You would need to have this scanned in 76 Parking aid with Vag com or other diagnostic tool to check which sensor/s has failed

Emlyn, May 2009

check to hear if theirs a clicking noise by the sensor if not then it needs to be replaced

David, March 2009

Hi Stephen, my list shows fuses 2,3 & 32 are connected with the "parking aid"

nigel, March 2009