How to tell if a Mercedes Benz wiring harness is bad?
Look at the sensors around the thermostat housing. On the original eco junk wiring, one of the wires is translucent green. On a replacement harness, that wire is blue. In addition, look for broken/missing wire insulator materials. …and just look for cracks in the insulation. I’ve passes on a few since my mechanic warned me.
What kind of wiring does Mercedes 92 500SEL use?
On 92 500SEL I used heat resistant wiring, heat shrink tubing, friction tape, epoxy. The job was very labor extensive and took me around 8 hours. Some plugs could no be saved as plastic was very brittle. Metal contacts were reused and new wires soldered directly to them. Finished harness looked close to factory and worked without any flaws.
Can a Mercedes Benz instrument cluster be repaired?
Your Mercedes Benz’s digital display or instrument cluster is a single unit that is considered non-repairable by Mercedes Benz. Common failures such as pixel drops can often be repaired by taking the instrument cluster out of the vehicle. For security and theft prevention, instruments clusters cannot easily be replaced.
What causes electrical wire to crack on Mercedes Benz?
Beside unwelcome friends discussed above, the central Texas heat can damage your Mercedes Benz’s electrical wire harnesses, particularly the engine harness. The excessive heat that we experience combined with engine heat can prematurely cause the wire covering to become brittle causing cracks.
On 92 500SEL I used heat resistant wiring, heat shrink tubing, friction tape, epoxy. The job was very labor extensive and took me around 8 hours. Some plugs could no be saved as plastic was very brittle. Metal contacts were reused and new wires soldered directly to them. Finished harness looked close to factory and worked without any flaws.
How many wires are in a Mercedes engine harness?
Other Mercedes or Non-Mercedes harness- please contact me for a quote. Engine harness rewire is very labor intensive process. Some harnesses have around 400’ of wires to replace.
How long does it take to rewire a Mercedes harness?
Some harnesses have around 400’ of wires to replace. Given that I replace one wire at the time to eliminate possible errors and maintain original wire length for all plugs to reach their destinations repair takes very long time. Some harnesses take me one day to rewire while others take few days depending on the model.
What kind of harness does Mercedes E320 have?
I also patched one harness on my 1996 E320 by taping wires that run to fuel injectors, coils, engine temperature sensors, camshaft advancer, etc. but it was temporary repair.
What was the year with bad wiring harnesses?
Were the diesel models an exception? 1992-1997 were the years with the eco junk wiring. All MB models, regardless of class designation and fuel type were affected. 91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know….. its a Mini van.
When did the R129 engine wiring harnesses go bad?
Your M119 powered R129 vehicle is no exception unless the upper & lower engine wiring harnesses and related components (electronic throttle, etc.) have already been replaced with identical items that were manufactured 1998 and newer. If I go to dealer would they tell me if an authorized dealer did the work?
What causes wiring harnesses on cars to crack?
The wiring insulation under the hood cracks and falls apart. It doesn’t matter how well you maintain your car, if you drive it little or alot, if you garage it or let it sit out in the street, if you pamper or abuse it – the insulation in the engine wiring harness will crack and eventually turn into dust over time.
Is there a problem with the Mercedes wire harness?
Mercedes is well aware of the problem they created and refuses to do the right thing which is recall all vehicles affected, not wait for the NHTSA to do it, nor count on naive customer/victims not to do anything about it erroneously thinking that the age of the vehicles is a factor.
Your M119 powered R129 vehicle is no exception unless the upper & lower engine wiring harnesses and related components (electronic throttle, etc.) have already been replaced with identical items that were manufactured 1998 and newer. If I go to dealer would they tell me if an authorized dealer did the work?
Were the diesel models an exception? 1992-1997 were the years with the eco junk wiring. All MB models, regardless of class designation and fuel type were affected. 91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know….. its a Mini van.
The wiring insulation under the hood cracks and falls apart. It doesn’t matter how well you maintain your car, if you drive it little or alot, if you garage it or let it sit out in the street, if you pamper or abuse it – the insulation in the engine wiring harness will crack and eventually turn into dust over time.