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2003 MB C240

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Old Sep 25, 2020 | 09:02 AM
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Prince Drez's Avatar
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2003 Mercedes benz C240 rwd
2003 MB C240

Hi all & thanks for having me. I’m on the forums today because I can’t seem to find what’s going on with the system in my Benz. So imma take y’all back to where it all happened.long story short I was making a right turn and my serpentine belt snapped because the tensioner pulley had failed, I got an alert on the computer saying the “battery/alternator visit workshop” so I pulled up a little and put the car in park. Turned it off. I replaced the serpentine belt and tensioner, car has been running fine since. Soon after went and got a oil change, people at valvoline checked the car, people at autozone checked the car, people at advanced auto checked the car. We scanned the car no codes or malfunctions popped up which is weird because I have the red error light. Could it be from a reset or is there something else going on? Haven’t had problems with the car but I seem to feel like I didn’t get everything fixed I’m I missing something? Thanks 2003 MB Benz C240 rwd anyone else had any problems like this?
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Old Sep 25, 2020 | 04:16 PM
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Russell Ormerod's Avatar
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not a merc
Explain what you mean about red error light
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Old Sep 25, 2020 | 06:46 PM
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2003 Mercedes benz C240 rwd

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Old Sep 25, 2020 | 07:55 PM
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01 clk430, 05 e500 4matic
Has anybody put a volt meter on it, or used the one in the display? turn key to position 1 and press reset button on instrument panel 3 times to display voltage
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Old Sep 26, 2020 | 05:40 PM
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2003 Mercedes benz C240 rwd
MB c240

We tested the battery and the alternator both good,.. we scanned the car no codes but malfunction on the computer in the car, which leads me to think there is something going on... unless need reset by disconnecting the battery??
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Old Sep 27, 2020 | 07:19 AM
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2003 Mercedes benz C240 rwd
Originally Posted by scotterikson
Has anybody put a volt meter on it, or used the one in the display? turn key to position 1 and press reset button on instrument panel 3 times to display voltage
it doesn’t display when I tried to do this, but we did test the battery and alternator with a meter both working how it should even when we did the rpm test and held it to test the alternator it was fine.... when the tensioner failed and belt snapped that’s when this light came on should I unplug the negative battery cable and try to reset the computer that way?
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