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Dash lights, speedometer, gas gauge, heat, etc. not functional

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Dash lights, speedometer, gas gauge, heat, etc. not functional

 
Old 03-07-2012, 07:20 AM
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C240 2002
Dash lights, speedometer, gas gauge, heat, etc. not functional

Hello All,

I own a ten year old 2002 C240 with 80,000 miles on the odometer. A week or so ago, I started my car and drove 25+ miles to a meeting. The dash lights, headlights, garage opener, speedometer, gas gauge, heat, etc. were not working.

I parked my car and after attending the meeting for around 3 hours, I started the car and everything came back on. Since then, all of those things will fail again, randomly. Usually, if I turn off the ignition and then turn it back on again, the failed items will work again.

Yesterday, I drove approximately 25 miles to a training event, when I left, at lunch time, everything stopped working when I started the car. My key was jammed (couldn't turn it). When I got it to turn, the first time I turned it to the starting position, the car didn't start until I removed the key and turned it again.

Any ideas what might be happening, e.g., bad key, bad ignition, bad relay somewhere, or what. Any advice will be appreciated.
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Old 03-07-2012, 07:53 AM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
This is likely a front SAM or EIS problem. What codes is the car storing?
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Old 03-07-2012, 08:00 PM
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C240 2002
P06000

Originally Posted by Glyn M Ruck View Post
This is likely a front SAM or EIS problem. What codes is the car storing?
P06000 is the only code I found
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Old 03-08-2012, 09:00 AM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
P0600 Serial Communication Link Malfunction - you might just have a bad connection somewhere.
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Old 03-08-2012, 03:37 PM
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C240 2002
Could this be the problem?

Glyn,

I pulled fuse 59 and sprayed contact cleaner on the connections for that fuse, and also sprayed the cleaner on the fuse. I used baking powder to clean the positive and negative battery connectors, and used an ODB II tool to erase the errors. The electrical malladies seem to have gone away, but now I am having trouble with my ignition key. Initially, I'd try to turn the key in the ignition and it wouldn't turn. I'd take it out of the ignition and turn it upside down and put it back in, and it would work. I changed the batteries, and now the key won't turn in the ignition at all. My space key, works fine. Do you think my problems might be related to the key or to the EIS?

Thanks,
Dick Gleason
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Old 03-08-2012, 07:35 PM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
The Key is energised by the EIS - not the batteries. They look after the distant RF & closer IR.

Once you place the key into the EIS the EIS energises it & then the handshake takes place once IR verification is achieved via the window in the nose of the key & the window in the EIS.

Clean the key & EIS windows with a cotton bud & isopropyl alcohol. Open the key & make sure that the induction coil has not broken off of the board.

Search for - Start protocol/start function/handshake etc. I have posted the whole process with pretty pictures many times.

Good luck!
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Old 03-08-2012, 07:39 PM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Here:

https://mbworld.org/forums/c-class-w...ight=Handshake

You might have a bad connection on the EIS harness plug.
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Old 11-15-2018, 05:11 PM
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2002 c320
The Gauge cluster won't come on!

I own a 2002 C320 Wagon. The problem is that the Dash Cluster stopped working. No lights in the Dash. Every thing else seems to be firms outside (i.e. the blinkers,the cruise control, the head lights) but no interior dash lights. This has happened before but came back on after driving it and let it set. It's about 33 degrees now and it just happened overnight.
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Old 11-15-2018, 05:12 PM
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2002 c320
I own a 2002 C320 Wagon. The problem is that the Dash Cluster stopped working. No lights in the Dash. Every thing else seems to be firms outside (i.e. the blinkers,the cruise control, the head lights) but no interior dash lights. This has happened before but came back on after driving it and let it set. It's about 33 degrees now and it just happened overnight.
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Old 11-15-2018, 06:04 PM
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2005 w203 C230
Check your battery...
when mine went last year - the cluster was all off...needles sticking, not working, bouncing, all warning lights on...only thing “normal” was the gas gage...

I put a post about it here...
https://mbworld.org/forums/c-class-w...-replaced.html
This was with a battery at 12.4v.

Changed battery. Back to normal!

Last edited by BF_JC230; 11-16-2018 at 10:48 AM.
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Old 03-27-2019, 10:56 PM
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Mercedes Benz
2002 Mercedes C240

I have similar problem with my fuel odometer. I'm looking for advice also to fix it personally.

Originally Posted by rgleason View Post
Hello All,

I own a ten year old 2002 C240 with 80,000 miles on the odometer. A week or so ago, I started my car and drove 25+ miles to a meeting. The dash lights, headlights, garage opener, speedometer, gas gauge, heat, etc. were not working.

I parked my car and after attending the meeting for around 3 hours, I started the car and everything came back on. Since then, all of those things will fail again, randomly. Usually, if I turn off the ignition and then turn it back on again, the failed items will work again.

Yesterday, I drove approximately 25 miles to a training event, when I left, at lunch time, everything stopped working when I started the car. My key was jammed (couldn't turn it). When I got it to turn, the first time I turned it to the starting position, the car didn't start until I removed the key and turned it again.

Any ideas what might be happening, e.g., bad key, bad ignition, bad relay somewhere, or what. Any advice will be appreciated.
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Old 05-23-2019, 10:33 AM
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2003 E320
If you only have problem with one gauge it is most likly the sending unit for that gauge.

Take a look at this guide, it explains all the most common problems with Mercedes instrument clusters.
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