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where to get the new sensor pad

Hi All,

A great thread that has been a great help and made it easy to get the seat disassembled.

Only problem i have is where to get a new occupancy sensor pad. Our local ones here do not have any in stock and the best price so far is $450.

If you can point me to a website or email address of a good supplier you would make me a very happy man.

PS I have a 2001 ML270 CDI (VIN: WDC1631132x746981)

Regards,
Rob
 

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Check the wires first

My SRS and passenger seat airbag lights came on a few days ago so I followed the excellent instructions in this thread to remove the sensor pad. Before assuming the pad was faulty I thought it was worth the time to inspect the wires.

Visually the wires looked fine, no chaffing or cuts in the insulation. I stripped off the outer insulation to reveal the 3 individual wires which also looked fine. As a final check I stripped back the insulation on each wire close the "box" and checked continuity from that point to the yellow plug. Sure enough, one wire was broken inside the insulation even with no sign of damage from the outside.

When my ohm meter showed no resistance on the white wire I lightly pulled on it from each end and it snapped in half. A quick splice and all is fine. The best part is it cost me nothing but a few hours of time.

If I had to do it again I would test the wires before separating the seat pad (white plastic clips) as the hardest part of the job was getting those clips to catch on the wires sewn inside the seat.

I hope this helps someone avoid the expense of replacing a perfectly good sensor.
 

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Does anyone know where to get the sensor for the $100 quoted. Multiple people have asked the same question but no one has stated where the sensors can be purchased this cheaply.

Thanks
 

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Hi
I got mine secondhand for £30 from the uk. Hopefully it was from a sales rep's car, not a family car! The one I put in has been in a family car with young kids bouncing on it for a year and no problems yet.
It is quick to change so I recokoned it was worth the gamble.
Good luck!
 

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I chickened out

So far I have gotten the diagnostics, yes I need to fix it.
I went to a local upholsterer who has the Benz symbol on his card.
He offered to do the work for $20 hour. I get the pad.
At that point I froze.
As long as this is my work Benz (outside sales) I aint going to mess with it.
Maybe when I retire, joke.
Anyone want to reinvigorate me?

Much obliged,

Jeffinski Max
 

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Go for it....

Pulling the seat out is 4 bolts and a few plugs. If your slow, fifteen minutes. A qualified person could replace that sensor in less than an hour so why not go for it? Personally I would check the wires as that is the only thing that was wrong with mine and easily spliced. I could do the entire thing again in an hour without any skills as an upholsterer.

Don't let it scare you, the worse you can do is get it apart and need someone else to put it back together which still reduces the time you pay for. This is not rocket science. I would say a 3 on a scale of 1-10.
 

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Discussion Starter #48
12279 hits and counting, oh my god...........

I had no idea this would go this far, thanks again greg and lord and all those who helped.

Let me see, 12279 at 1200 means that we have saved members $ 147,348,000 from the full dealer repair price.

MB must hate me.

OBTW- Hello from Stuttgart.

B
 

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Question for all of you who have done the DIY and to MRBSMITH. My Passenger airbag light light goes on after start up but goes away. So, Is my passenger seat sensor working ok?. Do I assume that it is my driver seat sensor that is causing the problem and has anybody replaced or fixed the wiring of their driver seat sensor. MY SRS dash lights is currently on.

Any input would be great.

Thanks
 

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airbag light

The light should come on when the ignition is first turned on. This is a indication that the bulb is functional and the airbag and sensor are functional. If the light does not come on momentarily or if it stays on, then you have a problem. What you describes sounds normal


John May
2001 E55
 

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seat pad sensor

BTW There is not a sensor in the drivers seat since it is not needed. If your dash SRS light "STAYS ON" then it is the passenger seat

John May
 

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Has anyone done this on an SL r129 model? My srs code is that pesky passenger seat and I'm gonna tackle it but not sure of the removal process, are the bolts in the rails and 4 in rear with 2 in front? ...
 

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to remove the r129 passenger seat cushion the entire seat does NOT have to come out, just the seat cushion ..... there are 2 bolts on the front of the seat horizonally ..... unbolt with 10m socket and seat pad comes up exposing electronics underneath .... be careful for at the rear of the cushion is the cable from the sensor that extends to the rear of the seat where it connects to the plug .... you may have to remove the rear plastic to get to the plug, its two phillip screws at the fold of the seat ....
 

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I just tried this on my 99 E320 and the sensor looks like its brand new. I've checked continuity from the yellow plug to the box and all is well. I guess I'm the anomaly who's going to have to bite the bullet for the new pad.

Kruso
 

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Well... I ended up installing the pad back into the car because I didn't know when I'd get around to purchasing a new one and the light is gone. It would come on immediately 5 seconds of starting the car but just went on a 30 minute ride and nothing *fingers crossed*.

Kruso
 

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Kruso.... Make sure when you check continuity that you bend the wires across the entire length. A small break could make contact at sometimes and no others. To me it sounds like you just have a loose/broken wire or contact.
 

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Kruso.... Make sure when you check continuity that you bend the wires across the entire length. A small break could make contact at sometimes and no others. To me it sounds like you just have a loose/broken wire or contact.
Good call :)... I kind of thought that and attempted to stretch out the wires as I was checking for continuity. I didn't think about bending it... if the light shows up again I might just replace all three of the wires altogether before forking over the bucks for the new pad.
 

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Discussion Starter #58
Sorry to hear you need the pad...

Also, I have helped on 8 of these now, and I now solder the connections when replacing the wire.
Also, Also, Do Not.... try the incar pad replace if you keep your car in mint condition as most our members do, You WILL scratch somthing and then you will see that scratch every time you get in the car.
The audience here is first time novice DIYers, and with our wisdom and guidance they do quite well.
B
 

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CHALLENGE

If anyone can post-up how to get into the multi-contour seats ( I need to replace the seat cushion and the length adjuster bladder) and provide the part No's for the bladder and cushion, I will buy a Premium Membership. :thumbsup:
 
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