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Discussion Starter #1
Hi guys,

I have a 2003 C230K Sedan. I have a extended warrenty that covers me to 100,000 miles or expire 2008, whichever comes first. Today while driving the Battery/Alternator Visit Workshop red light came on. So I took it straight to my MB dealer. I told them this light comes on and I hear a rattling sound, I have had no problems with the car shutting off or anything powering off. I asked them if this should be covered in the extended warrenty. The Service Rep explained to me that if it is battery it is not, but if it is the alternator then it probably is. He told me the way the extended warrenty works is that is that they submit a report to MB USA based on there Diagnosis and that if MBUSA decides to cover this, then I do not get charged. Is this true? I mean with the regular warrenty (50,000 / 4 years) they were willing to cover everything and now I maybe charged for a $180 diagnosis fee and then find out if the repair is covered under warrenty. Something does not seem to be right. Please let me know if I am being taken for a ride.

James
 

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Your being quoted the diagnosis, not really charged. Your agreeing to pay it if it isn't covered under warranty. Unfortunately, this is how it works. But if the warning light came on as you were driving down the road, you can probably assume it isn't the battery.
 

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Thanks for the tip. It turned out to be the Alternator. At first they told me that it was the voltage regulator (Is that part of the alternator?). I found that weird since I heard a grinding sound. When I picked up the car and read the report it said that the mechanic went for a drive this morning (for a cold start) and heard a grinding sound, checked the alternator bearings and saw they were bad. So replaced my alternator. All covered under warrenty.

How long should a battery last on a C230?

late
 

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Voltage regulator is part of the alternator. It controls the alternators output.

Batteries typically last about 5 years or less. Hell, they could last even a good 10 years if the water level is maintained and it's never allowed to discharge excessively. But usually no more than 5. And they can last as little as a day or two, if discharged enough.
 
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