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2000 ML430, 2010 E350 4Matic Sedan
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27 Posts
Discussion Starter #1
I had the same problem as many others with the driver's side bottom heat going out but the back still working. I replaced the bottom with the H2 model from heatedseatkits.com. Their customer service said to connect the new wiring to the cigarette lighter or to the fuse box (fuse tap) in the passenger footwell.

I've seen on here that people have connected to the existing wiring. Looking at that, it looks like there are 2 brown/ground wires, but I don't think these are the right ones.

Which wires do you connect to for existing wiring?
If not, that which option is recommended cigarette lighter or fuse box? I would like for it be switched.

Thanks.
Dante
 

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Super Moderator
99 ML430, 00 ML320, 05 E500 4matic Wagon
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22,216 Posts
I have the same problem with a blown seat cushion bottom... help, please
Please fill out your profile in your user CP. Knowing the year on this is huge.
In the early models the factory pad is available and not a huge repair. The
part with a good discount is less than $100 and almost any good trim shop can do
the job for a reasonable rate. It is something I did DIY. It was not easy, but
that was do to with having to removing so many things to be able remove the
leather and get to the heating pad. In hindsight I would have had a trim shop
do the job. Dealer quoted me almost $400 in labor. Trim shop was $180.
Had I known that then I would have gone to the trim shop. The dealer price
put me into DIY mode before checking trim shop prices.

If you do not have an early model then a much more expensive part needs
to be ordered as MB sort of molded the heater into the cushion itself.
 

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Registered
2000 ML430, 2010 E350 4Matic Sedan
Joined
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27 Posts
Discussion Starter #4
I finished this project and now have heat to the bottom. It wasn't too bad of a job but more confusion on how to connect everything. While not the optimal situation, I'm glad that I have heat. With temps in the teens right now, it's definitely going to be used.

My only issue is I would have liked to only use the existing wiring and switch but have to use the new switch that came with the replacement unit. With over 200K miles and 10 years, I guess I can't complain too much.
 
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