Electrical Issues please help
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2009 C300 4matic
Electrical Issues please help
So i bought the car about a year and a half ago and didnt touch it for some time. Recently ive been doing work on it and found a lot of unknown issues from when i bought it ill give you the list of them. Windscreen is cracked, rims are not the correct lug pattern, pools of water in the floor pan prodominatly the driver side. Car was throwing muiltpule engine codes. the current issue im dealing with is that when ever i shut the car off the dash says my high beams all exterior lights are on if i go to start the car again the dash then illuminates the parking brake and high beams(head lights flicker aswell). ive replaced the two can bus distributors on the driver footwell aswell as thourghly cleaned each connecter on the driver and passanger side. Car still doing the same thing from before replacing and cleaning. Any sugestions or thoughts car need to be inspecting in 5 days
Last edited by C300Huncho; 05-14-2024 at 03:39 PM. Reason: i need help didnt put in title
#2
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For the light staying on, this was a bad light switch for me which is common for the 204 and related chassis that use the same switch. There's also the issue of water ingress, which brings it's own shorting issues, which need to be corrected first and foremost. Then you'll need new (correct) wheels, replace the windshield, then on to the engine trouble codes. You probably won't make that 5 day deadline if we're being honest, so might as well take your time and do it right.
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Get rid of it!
If you have standing water in the floorpan, there is a good chance that water infiltrated the wiring and will wick its way to whatever electronics the wires are attached to. In time they will corrode and you will have never-ending phantom problems. I had a 2008 Infiniti G35x that was totaled by my insurance company because of "flood damage".
If you have standing water in the floorpan, there is a good chance that water infiltrated the wiring and will wick its way to whatever electronics the wires are attached to. In time they will corrode and you will have never-ending phantom problems. I had a 2008 Infiniti G35x that was totaled by my insurance company because of "flood damage".
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2009 C300 4matic
Get rid of it!
If you have standing water in the floorpan, there is a good chance that water infiltrated the wiring and will wick its way to whatever electronics the wires are attached to. In time they will corrode and you will have never-ending phantom problems. I had a 2008 Infiniti G35x that was totaled by my insurance company because of "flood damage".
If you have standing water in the floorpan, there is a good chance that water infiltrated the wiring and will wick its way to whatever electronics the wires are attached to. In time they will corrode and you will have never-ending phantom problems. I had a 2008 Infiniti G35x that was totaled by my insurance company because of "flood damage".
#5
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A lemon implies it was new and was never great from the factory floor. You bought a used, abused and neglected money pit of a car. I agree with the "get rid of it" assessment. If you want to continue going down this route, the first order of business is getting rid of the water.
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yes dry it out and make sure whatever caused water to get in is fixed. Sunroof drains would be a start to check.
Is the check engine light on? Or just getting a bunch of codes when scanned?
Is the check engine light on? Or just getting a bunch of codes when scanned?
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#8
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2009 C300 4matic
ive sealed the sunroof with silicone sealant im not sure if its a good idea to seal the drain hole thats next to the wiper arm. if cleaned dried the sam out as best as i could and the problem is now intermitent and comes and goes i think best bet it to just keep a 10m on me at all times so when i turn it off i can just disconnect the battery
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You do NOT want to seal drain holes. You want to clear them. Compressed air (125 psi) works well. Still, I doubt that your problems are over.
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check engine light is on ive already replaced the components its throwing codes for code persist. i also got rid of all the water in the floor pan and blew out all connecters and front sam problems still persist loss of headlamp use high beam indicator on parking brake intermittent no crank no start
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Again, get rid of it! It is going to cost you thousands of dollars!
#14
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Yeah, at this point just take the L and realize there are such things as lost causes and bad investments. Sorry to hear of one in such bad shape.
#15
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This is not ideal but works sometimes
ive sealed the sunroof with silicone sealant im not sure if its a good idea to seal the drain hole thats next to the wiper arm. if cleaned dried the sam out as best as i could and the problem is now intermitent and comes and goes i think best bet it to just keep a 10m on me at all times so when i turn it off i can just disconnect the battery
#16
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Have you seen videos on YouTube of replacing the canbus connectors in the floor pans? Looks like folks who had pooling water had corrosion on the connectors located in the footwell and replacing them helped with the dashboard lighting up like a Xmas tree.