S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Car wash triggered SRS light?

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Old 03-15-2010, 08:42 PM
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2003 S-500 4matic blk/blk
Car wash triggered SRS light?

Hi,

My SRS light came on with the 'Restraint System Malfunction' message on the dashboard as soon as I entered a touchless (Shell) car wash.

Came home, turned the engine off. Then half an hour later, I took the car for a spin, and this time everything was fine. No warning light, no message.

Is this supposed to happen every time you get such a car in an automatic car wash? Will this SRS light come back again?

I got my 2003 S-500 only last week, so I am still not very familiar with all this.

Thanks.
Old 03-16-2010, 08:49 AM
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Mercedes
these cars do not like automatic high pressure washes.

You got lucky this time but next time it can cause thousands in damage. There are many reports here, with pics, of the thousands in damage caused by car washes or even rainstorms

Take it to a hand wash or wash yourself.
Old 03-16-2010, 11:48 AM
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04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
PLease....

the only reason this would happen is if you water entering your cockpit. Check you vents for blockage and consider yourself lucky.
Old 03-16-2010, 12:24 PM
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Not true at all. there are multiple airbag sensors in the exterior of the car, and if they get wet they can become damaged.

High pressure washes are notorious for this, search prior threads.

The problem with water entering the interior is a separate problem and is also exacerbated by high pressure washes
Old 03-16-2010, 01:59 PM
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How would you then suggest to wash the car in the winter? Here in Canada roads are pretty salty.
Old 03-17-2010, 12:13 PM
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04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
Originally Posted by tusabes
Not true at all. there are multiple airbag sensors in the exterior of the car, and if they get wet they can become damaged.

High pressure washes are notorious for this, search prior threads.

The problem with water entering the interior is a separate problem and is also exacerbated by high pressure washes
Hmm .. a luxury car that can't get wet.. I must have missed that in the brochure..

tu no sabes nada!!!
Old 03-17-2010, 12:29 PM
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Mercedes
Originally Posted by my06clk
Hmm .. a luxury car that can't get wet.. I must have missed that in the brochure..

tu no sabes nada!!!
Yeah OK whatever.,... let me spoonfeed you
https://mbworld.org/forums/s-class-w...lp-please.html

https://mbworld.org/forums/s-class-w...sure-wash.html

https://mbworld.org/forums/s-class-w...g-problem.html

https://mbworld.org/forums/s-class-w...ont-start.html

The wheel sensors, airbag sensors and crank sensors are all susceptible to water damage and high pressure washes are the easiest way to cause problems. They are NOT located in the cockpit or caused by water entering the cockpit/reed valve issue. So next time search yourself so you dont look so ignorant

Last edited by tusabes; 03-17-2010 at 09:32 PM.
Old 06-11-2010, 04:58 AM
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Originally Posted by my06clk
Hmm .. a luxury car that can't get wet.. I must have missed that in the brochure..

tu no sabes nada!!!
you must have missed this too

https://mbworld.org/forums/s-class-w...ger-floor.html
Old 06-20-2010, 02:06 PM
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What kind of **** is this? i was driving yest in hot weather and my SRS light went on.....i did wash my car in auto car wash a few days prior but srs never went on... We pay big money for a car that cant even be washed?
Old 06-20-2010, 02:23 PM
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Originally Posted by badblackbenz550
What kind of **** is this? i was driving yest in hot weather and my SRS light went on.....i did wash my car in auto car wash a few days prior but srs never went on... We pay big money for a car that cant even be washed?
My car had the SRS light on again a couple of weeks ago when it was a hot day. But it went away the same evening.
Old 06-20-2010, 03:29 PM
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benzo larenzo
mine is till on, this is retarded... i will bnever buy MB again.
Old 06-20-2010, 08:21 PM
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2005 S500 4-Matic, 1978 450SL
SRS = supplemental restraint system. Most common failure has to do with a bad occupant sensor under a seat; often, this is caused by is a dirty (hopefully, not wet) connector for the sensor. You guys should be taking a look at the W220 S-Class Owners Start Here sticky, it's covered!

Last edited by Skylaw; 06-20-2010 at 08:24 PM.
Old 06-21-2010, 01:04 AM
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benzo larenzo
Originally Posted by Skylaw
SRS = supplemental restraint system. Most common failure has to do with a bad occupant sensor under a seat; often, this is caused by is a dirty (hopefully, not wet) connector for the sensor. You guys should be taking a look at the W220 S-Class Owners Start Here sticky, it's covered!
so i have to check every censor in all my car seats ?
Old 06-21-2010, 09:14 AM
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Originally Posted by badblackbenz550
so i have to check every censor in all my car seats ?
1) As I recall, it's only the passenger and driver's seat.

2) No, you can pay a dealer or independent to do it.

3) We can only tell you where to look, and what a cause might be; we have no long-dstance diagnostic tools to connect to your car. That's why they have dealers and certified independents. Yes, you'll have to address the problem yourself.

4) If it turn out to be water leaking, check the W220 S-Class Owners Start Here sticky at the top of the W220 forum for important information on this problem.

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