Question about 1998 Mercedes-Benz C-Class
The regulator pack on the alternator has given up, some call it the brush pack also, the regulator is about £10, you will need to rmove the alternator to replace the reg pack, easy job, once fitted with the engine running check the voltage, should be 14.2 volts.
Posted on Nov 24, 2008
Sounds like your alternator stopped working on you. A quick test is to start the car and while it's running remove the NEGATIVE battery cable. If it stays running the alternator is still good, if it quits the alternator needs to be replaced. Take a peek at the wires coming off of the back of the alternator and make sure you have to broken wires.
Posted on Jun 29, 2008
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You can test this by putting a volt meter across the battery posts. A fully charged battery should read 12.6 volts. Then start the engine and the voltage should increase to 13.5 to 15 volts. If you do not get this increase in voltage, then the alternator is not charging, which can be either the wiring to the alternator or the alternator itself being bad. Good luck :O)
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