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Car Forum / BMW Cars / November 2007Parking sensors
I have a 2002 320DSE fitted with parking sensors at the rear. Now when I engage reverse gear I get a constant tone when there's nothing behind the car and I'm told that this probably means that one of the sensors is faulty. I believe I can test the sensors one by one by disconnecting them in turn and engaging reverse gear. Can anyone comment on this? Also can anyone explain how to actually remove the sensors? Does the bumper need to be removed? Thanks Jim > I have a 2002 320DSE fitted with parking sensors at the rear. Now when > I engage reverse gear I get a constant tone when there's nothing > behind the car and I'm told that this probably means that one of the > sensors is faulty. Probably. > I believe I can test the sensors one by one by disconnecting them in > turn and engaging reverse gear. Can anyone comment on this? Also can > anyone explain how to actually remove the sensors? Does the bumper > need to be removed? Not familiar with your model - but on other BMW models with PDC, if one fails - the system fails. If one fails open - the system fails, meaning disconnecting it won't do a thing. The test that will tell you which one it is - the dealers GT1 can monitor the output from each one. Or you could buy one new one and try swapping it into each position until the fault is fixed. Dunno how it is removed on your 3 - on a 5 series of that era, they are in the extra bumper strip - and just that strip has to be removed. > Thanks > > Jim > > I have a 2002 320DSE fitted with parking sensors at the rear. Now when > > I engage reverse gear I get a constant tone when there's nothing [quoted text clipped - 21 lines] > > > Jim Thanks for the prompt response. There is a black bumper strip but when I remove it I find that the sensors are set into the bumper. I can turn them very slightly from side to side but can see no obvious way to remove them. Can anyone offer advice? Thanks > There is a black bumper strip but when I remove it I find that the > sensors are set into the bumper. I can turn them very slightly from > side to side but can see no obvious way to remove them. Can anyone > offer advice? They usually clip in so you need to get to the back to press in the clips to release them.  Signature*The most wasted day of all is one in which we have not laughed.* Dave Plowman dave@davenoise.co.uk London SW To e-mail, change noise into sound. As Goffer said, a dealership can plug the GT1 into the vehicle and see exactly what the sensors are monitoring. Another thing worth looking at is does it have any accessories that could give false readings, for example towbar, etc. >I have a 2002 320DSE fitted with parking sensors at the rear. Now when > I engage reverse gear I get a constant tone when there's nothing [quoted text clipped - 9 lines] > > Jim You can hear the sensors clicking when they are working. > As Goffer said, a dealership can plug the GT1 into the vehicle and see > exactly what the sensors are monitoring. [quoted text clipped - 15 lines] > > > > Jim > You can hear the sensors clicking when they are working. You must have wonderful ears since they're ultrasonic devices.. >> You can hear the sensors clicking when they are working. > >You must have wonderful ears since they're ultrasonic devices.. However, when mine packed up on my E38 it was a relay - after the dealer tried to sell me 2 x control units and £500 of labour - final bill was £80 and a loan car for a week till they fixed it - why? they screwed up by not touching the car when I left it to be fixed so I got the sales manager's M5 for a week. Nice people to do business with. (sometimes) SignatureSir Hugh of Bognor The difference between men and boys is the price of their toys. Intelligence is not knowing the answer but knowing where and how to find it! Hugh Gundersen hsg@h-gee.co.uk Bognor Regis, W.Sussex, England, UK >> You can hear the sensors clicking when they are working. > >You must have wonderful ears since they're ultrasonic devices.. No, you can hear the pop when they start emitting. You can't hear the ultrasonic tone, but you can hear a click. --scott Signature"C'est un Nagra. C'est suisse, et tres, tres precis." > In article <fgnvaj$cr...@news.monmouth.com>, admin <ad...@192.168.0.2> wrote: > [quoted text clipped - 7 lines] > -- > "C'est un Nagra. C'est suisse, et tres, tres precis." Had the same problem on my e46 coupe. YES you can hear the click when in reverse so it is possible to detect which one is faulty. To get them out you need to lie on the ground and reach up behind the bumper to pop them out. > Had the same problem on my e46 coupe. YES you can hear the click when > in reverse so it is possible to detect which one is faulty. To get > them out you need to lie on the ground and reach up behind the bumper > to pop them out. Laying behind the car while it's in reverse isn't something I think I want to try.. call me wacky.. >I have a 2002 320DSE fitted with parking sensors at the rear. Now when >I engage reverse gear I get a constant tone when there's nothing [quoted text clipped - 9 lines] > >Jim Or something is stuck over it????? SignatureSir Hugh of Bognor The difference between men and boys is the price of their toys. Intelligence is not knowing the answer but knowing where and how to find it! Hugh Gundersen hsg@h-gee.co.uk Bognor Regis, W.Sussex, England, UK |
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