Parking Sensors and WD40?

[E55BOF]

As with (occasionally) most of the W211s and W212s I've had, the front parking sensors on the E63 seem to be a bit prone to playing up after heavy rain due to water ingress. I've seen somebody suggest that WD40 is a short-term solution. I presume I just wait until there have been a few dry warm days to be sure they have dried out completely, then give them a good squirt in situ, without any dismantling, and wipe off the excess?

 

[OneForTheRoad]

i think the whole point of wd40 is to disperse water , so no need to wait until they are dry .

 

[wu56Shoozz]

I wonder if a coating of Rain X or a slight coating of Silicone grease would help?

 

[John N]

As with (occasionally) most of the W211s and W212s I've had, the front parking sensors on the E63 seem to be a bit prone to playing up after heavy rain due to water ingress. I've seen somebody suggest that WD40 is a short-term solution. I presume I just wait until there have been a few dry warm days to be sure they have dried out completely, then give them a good squirt in situ, without any dismantling, and wipe off the excess?

I would be wary of long term application of WD40 to a Painted Surface, I know it's Military Version warns the User to avoid applying it to Electrical Circuitry, so if it can attack PVC Insulation it can damage Paintwork!

 

[OneForTheRoad]

ive popped all mine out they are now on a radiator , i intend to seal the connections with Vaseline etc, and give them a spray with silicone before reassembly.one of my rears flags up an error all the time ,so ive ordered a cheap replacement from ebay, hopefully ill receive a bosch one as well.

 

[E55BOF]

I would be wary of long term application of WD40 to a Painted Surface, I know it's Military Version warns the User to avoid applying it to Electrical Circuitry, so if it can attack PVC Insulation it can damage Paintwork!

It doesn't attack PVC insulation, but it is itself an insulator.

Mine are toasting in the sun at the moment, as is the car. I've checked connections before, but never found any moisture inside the multiple seals on the rear connectors.

I'll spray some WD40 on them on Monday afternoon, I think, and see how they go on.

 

[sturgeon]

Silicon spray is much better for rubber seals and plastics. Its also dielectric. I'm pretty sure WD40 contains a small amount of white spirit which is a solvent for some paints and plastics.

 

[OneForTheRoad]

silicone spray is the best option , you can also do all your door rubbers , sunroof , etc with whats left.

 

[E55BOF]

Silicon spray is much better for rubber seals and plastics. Its also dielectric. I'm pretty sure WD40 contains a small amount of white spirit which is a solvent for some paints and plastics.

I think I've got some somewhere; it can't hurt, so I'll try that first.

 

[sturgeon]

Its well worth a try. It actually plumps up rubber seals and stops them perishing.

 

[OneForTheRoad]

i ordered one from here Mercedes PDC Parking Sensor A C CL CLK CLS E GL M ML R SL SLK Class 0015427418 | eBay it has all the original markings of the mb bosch one but im not 100% convinced its genuine due to the resin filler , which the original didnt have, anyways at the price if it cures my buzzing ill be happy with it, just need some silver paint now.

 

[rf065]

Silicon spray is much better for rubber seals and plastics. Its also dielectric.

Would a tube of dielectric grease be a better option?

Russ

 

[sturgeon]

Don't know. If the dielectric grease is silicon grease yes, but if it is petroleum based then it can rot rubber seals !

 

[BelfastBill]

Are these had to fit exchange on a w211 2005 as there are some faulty on my wife's car.

Thanks'
Bill.

 

[OneForTheRoad]

The rears are easy enough.fronts not so.