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  #1  
Old 09-16-2012, 04:20 AM
Junior Member
 
Join Date: Sep 2012
Posts: 2
Default C220 W202 Instrument Cluster fault

Living in Oz, my car is right hand drive C220 Elegance W202 chassis gasoline auto with 111 series engine.

The instrument cluster is misbehaving in a similar way to others but I don't believe I have read a definite solution to my issue.

When I turn the key to the last position before start, all the diagnostics light come on as usual, but quite often, none of the gauge needles (fuel, temp, oil) register. Then I start the engine, all diagnostics lights go out as normal, the engine fires OK but the Revs does not display any movement.
I can then drive off and still no needles work - but the trip meter and the klms traveled work just fine. No speed, no fuel gauge, or temp working.
When I stop and park the car, switch off engine, all seems normal and no instrument lights issues at shut down.
Often, I can then restart the car right away and find all needles working as they should.

What has been done to date with a mechanic.

1. Tech tools diagnostics plugged in and found these errors - * - Code 049 (mixture too rich etc). * - Code B1748 (connection to ETS control module is short circuit to positive terminal.
Another message on the screen but with no error code said "Instrument Cluster, fuel gauge sensor open circuit".

2. Removed the Instrument cluster from the dash - found no lose connections including earth connections all fine - has part numbers VDO 110.008.736/002 and MB Part No 2025406047 on a white label on the cluster.

3. Have run the engine with the instrument cluster pulled out of the dash with needles not registering and moved the whole cluster around by hand - no changes to fault.

4. OVP relay has been tested including trying one from another identical vehicle - no change.

5. With engine running, have checked the ignition key area for possible faults - all seems fine.

6. We did observe when we turn the key on, and the needles do not respond, the fuel gauge needle actually drops down slightly below the 0 indicator on the fuel gauge and constantly flickers slightly.
When we turn the ignition key off, that fuel gauge needle returns to a position just slightly above the 0 as is its normal position.

There is no consistent pattern to this one. very strange - Hope someone can recommend a solution.

Indications of a failed instrument cluster the likely problem?

As replacement part is cost-prohibitive, and if recommendations from this forum indicate an instrument cluster overhaul, would appreciate who is best to repair or exchange by cluster.
If an exchange, can anyone confirm the instrument cluster is the same for left or right hand drive please or would I be best advised to have mine overhauled?
There are no repair facilities for this issue in Oz.

Can anyone advise if the info at this website regards circuits is correct please?

Google Translate

Hope someone can help.

Roadhugger
1995 C220 Elegance (when its going good)
2002 C200K Kompressor - ladies car
1989 300SE - W126 - my favorite
=================
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  #2  
Old 09-16-2012, 11:34 AM
chassis221's Avatar
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Join Date: Feb 2007
Location: Philadelphia, Pa
Posts: 2,666
Default

Quote:
Originally Posted by Roadhugger View Post
Living in Oz, my car is right hand drive C220 Elegance W202 chassis gasoline auto with 111 series engine.

The instrument cluster is misbehaving in a similar way to others but I don't believe I have read a definite solution to my issue.

When I turn the key to the last position before start, all the diagnostics light come on as usual, but quite often, none of the gauge needles (fuel, temp, oil) register. Then I start the engine, all diagnostics lights go out as normal, the engine fires OK but the Revs does not display any movement.
I can then drive off and still no needles work - but the trip meter and the klms traveled work just fine. No speed, no fuel gauge, or temp working.
When I stop and park the car, switch off engine, all seems normal and no instrument lights issues at shut down.
Often, I can then restart the car right away and find all needles working as they should.

What has been done to date with a mechanic.

1. Tech tools diagnostics plugged in and found these errors - * - Code 049 (mixture too rich etc). * - Code B1748 (connection to ETS control module is short circuit to positive terminal.
Another message on the screen but with no error code said "Instrument Cluster, fuel gauge sensor open circuit".

2. Removed the Instrument cluster from the dash - found no lose connections including earth connections all fine - has part numbers VDO 110.008.736/002 and MB Part No 2025406047 on a white label on the cluster.

3. Have run the engine with the instrument cluster pulled out of the dash with needles not registering and moved the whole cluster around by hand - no changes to fault.

4. OVP relay has been tested including trying one from another identical vehicle - no change.

5. With engine running, have checked the ignition key area for possible faults - all seems fine.

6. We did observe when we turn the key on, and the needles do not respond, the fuel gauge needle actually drops down slightly below the 0 indicator on the fuel gauge and constantly flickers slightly.
When we turn the ignition key off, that fuel gauge needle returns to a position just slightly above the 0 as is its normal position.

There is no consistent pattern to this one. very strange - Hope someone can recommend a solution.

Indications of a failed instrument cluster the likely problem?

As replacement part is cost-prohibitive, and if recommendations from this forum indicate an instrument cluster overhaul, would appreciate who is best to repair or exchange by cluster.
If an exchange, can anyone confirm the instrument cluster is the same for left or right hand drive please or would I be best advised to have mine overhauled?
There are no repair facilities for this issue in Oz.

Can anyone advise if the info at this website regards circuits is correct please?

Google Translate

Hope someone can help.

Roadhugger
1995 C220 Elegance (when its going good)
2002 C200K Kompressor - ladies car
1989 300SE - W126 - my favorite
=================
I did have a situation in a 202 chassis with the fuse for the instrument cluster would sometimes blow, it wouldnt always blow a fuse, but at times the cluster gauges would not work just as you said. sometimes they would be fine and have no problems. problem seemed to accur when turning corners mostly. I think in my situation the rear tail lights were also affected.
Found in the right side trunk behind the paneling at the right side along the fender at the wheel well area, a wire harness was shorting out on the fender/support.It just wore threw the tape and rubbed a small hole in the harness, and was shorting out. blowing the cluster fuse. good luck.
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  #3  
Old 09-17-2012, 05:44 AM
Junior Member
 
Join Date: Sep 2012
Posts: 2
Default W202 C220 Instrument Cluster

Many thanks for the feedback.

The fuse which protects the cluster needles also powers the roadside red hazard dash switch which works fine.
I plan to remove all the relavent fuses snd the cluster and clean all contacts with a spray.

The needles (fuel, temp, revs and speed when you start driving) are the only thing effected. They either work at engine startup or they don't.
All diagnostic lights operate as they should and go out soon after the engine fires. All lights around the car at all times work just fine in all circumstances even dash lights etc.

When needles are operating, they have never stopped working while driving. Even had the Instrument panel out of the dash when the needles are working and while my friend was driving, shook the panel and twisted it around with the cables plugged in, tried severe braking and no failure.
Yet on one occassion, we stopped, parked, turned the engine off and removed the key, then reinserted the key to start up again and no needles.
Then went for a drive with the needles not operating and went through the same shake and twist process with no change. When we parked the car this time and switched off and then restarted again, the needles did not work again.
This is a tough one.

Have been in touch with BBA-reman.com/UK and they believe can repair mine - approx US$350 plus shipping is the killer - another US$300!!

The MB part no is 2025406047 which contains KPH speedo.

Roadhugger
========================

Quote:
Originally Posted by chassis221 View Post
I did have a situation in a 202 chassis with the fuse for the instrument cluster would sometimes blow, it wouldnt always blow a fuse, but at times the cluster gauges would not work just as you said. sometimes they would be fine and have no problems. problem seemed to accur when turning corners mostly. I think in my situation the rear tail lights were also affected.
Found in the right side trunk behind the paneling at the right side along the fender at the wheel well area, a wire harness was shorting out on the fender/support.It just wore threw the tape and rubbed a small hole in the harness, and was shorting out. blowing the cluster fuse. good luck.
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  #4  
Old 09-17-2012, 01:06 PM
Junior Member
 
Join Date: Aug 2012
Location: NY
Posts: 5
Default

I am having a similar problem on my 94 C280 but my temp gauge still works just no gas, MPH or RPM....any suggestions?
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  #5  
Old 03-04-2014, 07:44 AM
Junior Member
 
Join Date: Mar 2014
Posts: 1
Default

Ok I had the same problem. U need the remove the cluster and clean the needles they get stuck from parking in the sun. Hope this help
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Old 03-04-2014, 07:44 AM
 
 
 
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2025406047, benz, c220, cluster, faulty, flicking, indicatur, instument, mercedes, repair, signs, speed, speedometer, w202, work


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