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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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I am driving a ml320 2001. I am having instrument cluster

Customer Question

Hello. I am driving a ml320 2001. I am having instrument cluster issues. When
JA: Sometimes things that you think will be really complicated end up being easy to fix with Mercedes. The Mercedes Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.
Customer: The illumination bulbs are not functioning and when I hit the hazard lights the left and right turn signals come on
JA: Are you hoping to fix this yourself?
Customer: Yes. I have a voltmeter, computer safe logic probe. Instrument cluster is out of its case.
JA: Great! What have you tried so far?
Customer: I have tested all the fuses on driver side
JA: Is there anything else the Mercedes Mechanic should be aware of about your Mercedes?
Customer: I am testing the connection from the car to the cluster right now
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and then connect you two.
Submitted: 9 months ago.
Category: Mercedes
Customer: replied 9 months ago.
I am not sure where to go from here. I do not have schematics for the instrument cluster
Expert:  CHRIS ZAPANTIS replied 9 months ago.
is the speedometer not working?
Customer: replied 9 months ago.
No. None of my gauges
Expert:  CHRIS ZAPANTIS replied 9 months ago.
ok these cars are notorious for having cluster problems. You really need an engineer to test a cluster itself a mechanic cant test boards and such.
Expert:  CHRIS ZAPANTIS replied 9 months ago.
are you there?
Customer: replied 9 months ago.
Ok. Thanks I guess
Expert:  CHRIS ZAPANTIS replied 9 months ago.
I can reccomend someone you can mail your cluster to if you wish
Expert:  CHRIS ZAPANTIS replied 9 months ago.
where are you located?
Customer: replied 9 months ago.
No thanks
Expert:  CHRIS ZAPANTIS replied 9 months ago.
I presume you have cheked fuses and powers and grounds going to cluster before you decided to remove it?
Expert:  CHRIS ZAPANTIS replied 9 months ago.
As a tech thats how we do it. We check if it has the necessary powers and grounds to work and if it doesnt we replace them.
Customer: replied 9 months ago.
That is what I am doing but unfortunately you have to remove the cluster to get to the connection. I just found the wire schematics for the instrument cluster. I found a dicrepency.
Expert:  CHRIS ZAPANTIS replied 9 months ago.
you only need to check powers and ground cluster out is ok
Expert:  CHRIS ZAPANTIS replied 9 months ago.
whats the discrepancy?