Question about rear parking sensors V12V

[RS6bird]

Hi everyone,

I was hoping you could help me out. The car today, when I put her in reverse, just started making one loud beep from the parking sensors, as if something were close to the rear, but nothing was. The sensors were working fine yesterday, and upon inspecting them, they look excellent. Any suggestions?

Thanks!

[TVR4500cc]

Were they wet / damp?

Give them a wipe!

Or press the "P" bottom twice, slowly, i.e. off and back on again.

Good luck

[RS6bird]

TVR4500cc said:

Were they wet / damp?

Give them a wipe!

Or press the "P" bottom twice, slowly, i.e. off and back on again.

Good luck

Hi TVR,

Thanks for the suggestions.

No, they weren't wet. I've tried pressing the P button, and it turns off normally, but once in the on position again, it just lets out one long beeeeeep as if the rear were about to touch an obstacle.

[RS6bird]

Just to update the thread...I took it to the AM service and apparently two sensors are wonky, so have been ordered. Not much else I can do.

Thanks for the input!

[TVR4500cc]

Had an issue with a non Aston car that had been back to dealer for a failed fix by the previous owner.

That proved to be the number plate being too flappy and the edges of the plate set the sensors off - removing the plate solved the issue.

So a properly fixed plate then did likewise.

May be worth a try???

[steveatesh]

RS6bird said:

Just to update the thread...I took it to the AM service and apparently two sensors are wonky, so have been ordered. Not much else I can do.

Thanks for the input!

Pleased you got sorted and sorry I’m late to the party on this one.

I had exactly the same symptom, as you now know it’s a sign of a defective sensor.

To test them, simply get an Aston Martin approved toilet roll holder, switch ignition in and put the car into reverse. Then place the toilet roll holder over each sensor in turn and out your ear to the other end.

If they are ok you will hear a clicking noise. The one that is bust doesn’t click.

Mine was around £40 to buy iirc and a simple replacement.

[Manx V8V]

Not AM specific, but I guess these sensors are probably generic to a lot of cars so worth a try.

This problem was common when I owned a Merc, and the general fix was to pop the sensors out of the bumper and give them a squirt of WD40 and a good clean up before popping them back in.

Won't cost anything to try, and worst case you'll end up replacing them which you would have done anyway.