20 Most Recent 2003 Mercedes-Benz C-Class Questions & Answers


Try checking the key reader it's usually a plastic ring around the key barrel. If it's dies will not read code in key to enable the car to start. Check your key is sending a code as well.

2003... | Answered on Feb 17, 2018


The remote key has a 2 coin batteries fitted. These may have gone flat. Point the keyfob at the car and watching the key press the unlock button. On the key fob there should be a small LED light which blinks. If not, the batteries need replacing. Try this YouTube video. I think they are CR2025 type batteries.

2003... | Answered on Jan 26, 2018


Its possible the glow plugs when its warm the diesel is warm and starts more easily when its cold the diesle needs warming more so the glow plugs work harder in the winter only way i know how to test them is to take 1 out at a time turn the pre ignition on so the glow plug light comes on and the plug should glow red if not buy the 4 and replace the lot you could also check the wireing going to the plugs hope this helps ivan

2003... | Answered on Dec 02, 2017


take the car to a professional suspension shop
indicates suspension rubber mounts failure as well as shocky's need replacing

2003... | Answered on Nov 29, 2017


I hope I'm wrong, but sounds like a wiring harness malfunction possibility. Back in the late 70's, I had a '67 VW van. At night, when I'd turn off the ignition the engine would turn off, as it should IF I TURNED OFF THE LIGHTS, BUT IF i TURNED THE LIGHTS BACK ON AS THE ENGINE WAS SHUTTING DOWN, THE ENGINE WOULD RESUME RUNNING.

2003... | Answered on Nov 14, 2017


Usually if you disconect the battery leave for few minuets and then reconect it it usually spits the cd out as the unit resets itself saves a few 100$ hope yhis works if notbthe mechanisem in the unit has gone you will have to strip the cd player down to get your cd back

2003... | Answered on Nov 07, 2017


For straight up replacments either ebay or a scrap dealer but most head units will fit unless its a double din unit you can get them fitted from new and fitting will cost around the 30 pound mark hopevthis gelps ivan

2003... | Answered on Nov 07, 2017


Its possible that its the cluster its self if possible depending on harness ect can you swop the clusters around left to right ect just to see if the lights work with the cluster swoped round the old ones had just 1 plastic tab thing that keeped them in the light part and the cluster bulbs ect where a seperat part if it was fuses ect all the lights would go off not just one side check earths ect they may be behind the cladding bits at either side of the boot make sure there ok hope this helps ivan

2003... | Answered on Nov 07, 2017


The voltage regulator in the alternator has probably failed. The AH rating of the battery has nothing to do with it. This is why I would never own a MB, too many gadgets that cost a fortune to fix when they fail.

2003... | Answered on Jun 21, 2017


Those seats probably use a relay as well as fuses. The owners manual has a legend for the fuse and relay location and function.

2003... | Answered on May 17, 2017


Its a part inside the gearbox called the k1 clutch assembly, that has gone faulty. Unfortunately no quick fix.

2003... | Answered on Apr 30, 2017


replace the door lock actuator assembly for the passenger door

2003... | Answered on Jan 16, 2017


No such codes, sorry. If the lights are on then a fault exists in the systems. Once the faults are corrected the light will go out.

2003... | Answered on Sep 21, 2016


Elizabeth, Shifter mechanism or linkage probably faulty, have a good technician have a look, diagnose and estimate repair. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
How to Repair Mercedes Benz Shifter and Lever
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Won shift back to Reverse or Park Stuck in 1st gear MBWorld org Forums

2003... | Answered on Aug 20, 2016


You need to see a transmission shop but I suspect the transmission has a internal part failure

2003... | Answered on Aug 20, 2016


You must have the engine computer scanned for fault codes, very seldom does a fault disable the engine.

2003... | Answered on Jul 10, 2016

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