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Mercedes-Benz C230 Problems and Repairs

92 messages,  Last post on Dec 04, 2009 at 4:23 PM

You are in the Mercedes-Benz C-Class Forum. Your Hosts are pat & karens

What is this discussion about? Mercedes-Benz C-Class, Auto Repair, Sedan


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#40 of 92
Re: Changed Batt now SRS code shows [art30] by Mr_Shiftright HOST
Jan 05, 2009 (9:46 am)
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Replying to: art30 (Jan 04, 2009 9:57 pm)

I think you need to go to a dealer or repair shop and hook it up to the STAR system or some such. This only takes 2-5 minutes. They should do it for free as a courtesy.
#41 of 92
No Driver side headlight, Parking light and Turnsignal by kompresser
Jan 11, 2009 (6:54 am)
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We have a 2002 C230 with 120,000 miles. I have some electrical problems and not sure if they are related. The big one is we have no low beam, parking light or turn signal on the drivers side. The cable coming into the cluster has 4 functions,, including the high beam which works. I swapped all of the bulbs to the passenger side and they all work. I checked the fuse and it is good. I swapped it out with the passenger side and it is fine. I also checked the fuse box and there is power to the fuse. There is no power to the cluster. Am I missing a connector somewhere? Also the battery goes dead if the car is not driven everyday. We put in a new battery but didn't help. I don't know if this is related. Also have a bad noise through the radio so right now we pulled the fuse for the sound system. Any help here would be great.
#42 of 92
Re: No Driver side headlight, Parking light and Turnsignal [kompresser] by Mr_Shiftright HOST
Jan 11, 2009 (8:38 am)
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Replying to: kompresser (Jan 11, 2009 6:54 am)

Well congratulations on attempting a logical and diligent diagnosis, first off.
 
Yeah you know this all does sound related and I'm here thinking....what component could cause all of this to happen?
 
I came up with two ideas, one vague, one more concrete.
 
Vague: A glitch in the wiring harness from the headlight to a connector or junction box further up on the firewall.
 
Concrete: Your headlight switch itself or the connector that plugs into it.
#43 of 92
Re: No Driver side headlight, Parking light and Turnsignal [kompresser] by Mr_Shiftright HOST
Jan 11, 2009 (8:39 am)
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Replying to: kompresser (Jan 11, 2009 6:54 am)

Well congratulations on attempting a logical and diligent diagnosis, first off.
 
Yeah you know this all does sound related and I'm here thinking....what component could cause all of this to happen?
 
I came up with two ideas, one vague, one more concrete.
 
Vague: A glitch in the wiring harness from the headlight to a connector or junction box further up on the firewall.
 
Concrete: Your headlight switch itself or the connector that plugs into it. You might say "but the fuse has power"...but I don't know a) if it fuses before the switch (don't have a diagram of it) and b) if there is a low beam fuse and a high beam fuse. Maybe that fooled us.
#44 of 92
Re: No Driver side headlight, Parking light and Turnsignal [Mr_Shiftright] by kompresser
Jan 11, 2009 (11:17 am)
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Replying to: Mr_Shiftright (Jan 11, 2009 8:39 am)

I ordered a service manual that has a wiring diagram. I am thinking it is something little. The headlights went out and came back on a couple of times before going out completely. It seemed like a connector falling off but not sure where to start looking. I can see if I can located the switch and see if there is a connector off. Wish I had the diagram now.
#45 of 92
Re: No Driver side headlight, Parking light and Turnsignal [kompresser] by Mr_Shiftright HOST
Jan 11, 2009 (11:38 am)
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Replying to: kompresser (Jan 11, 2009 11:17 am)

You might try turning the headlights on and with someone watching start jiggling wires.
#46 of 92
Re: No Driver side headlight, Parking light and Turnsignal [Mr_Shiftright] by kompresser
Jan 11, 2009 (12:06 pm)
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Replying to: Mr_Shiftright (Jan 11, 2009 11:38 am)

I'll give it a try. Thanks for the help
#47 of 92
Fuel tank burp causes Check Engine Light ON! by SailrPete
Jan 25, 2009 (5:21 pm)
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For the past 5 months, I have a repetitive Check-Engine light from what seems to be a pressure surge in the fuel tank. I get an emissions code, usually gas cap not sealed AND liquid gas on the cap gasket. The tank pumps have been checked and the vacuum valves tested OK. The pump pressure sensors have been replaced and other connections checked. The problem just occurred again. Has anyone heard of a similar problem and what to inspect, test ,etc. The repair shop seems unable to solve this problem!?!
#48 of 92
Re: Fuel tank burp causes Check Engine Light ON! [SailrPete] by Mr_Shiftright HOST
Jan 25, 2009 (6:05 pm)
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Replying to: SailrPete (Jan 25, 2009 5:21 pm)

Do you remember the number of the trouble code?
#49 of 92
Re: Fuel tank burp causes Check Engine Light ON! [SailrPete] by kufu
Jan 25, 2009 (6:10 pm)
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Replying to: SailrPete (Jan 25, 2009 5:21 pm)

If the emission code is PO455 Evaporative emission control system leak you need to monitor the fuel tank pressure on a cold engine start during the evaporative test.
The computer is measuring a vapor leak or it "thinks" there is a leak because the pressure does not change AS IT SHOULD.
To test the car by yourself, do the following:
1. clear Check Engine light.
2. fill up your tank TO THE TOP and make sure gas cap is sealed well.
Run the car until you spend 1/2 of the tank. IF the Check Engine do not reappear, you have fake call from your computer.
Hopefully, first or second test will help you out.

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