Good morning all. I have a W203 270 CDi which has a water cooled Delphi 190 amp alternator.
About a year ago I started to see the Alternator / Battery warning light. Checked connections, checked battery and measured voltage etc. Eventually I concluded it was the regulator, bought a new one and managed, with some contortion... to change it without removing the alternator.
All was well for several months, but then the problem re-occurred. The voltage when running is 14.83 measured with a voltmeter at the battery. I do not seem to have the voltage measurement on the dash panel, the car was one of the early W203 models and does not appear to have this menu.
Apart from the Alternator / Battery warning light there does not seem to be a problem. The voltage doesn't appear high enough to cause a problem to the battery and all the electrics perform correctly, except for the automatic headlight function, which causes the headlights to go off momentarily when the warning light comes on, easily avoided by switching them on manually.
Any ideas please? Should I change the regulator again, I would like to avoid the expense of a new alternator if possible. Or could it be something more complicated?
Many thanks in advance.
About a year ago I started to see the Alternator / Battery warning light. Checked connections, checked battery and measured voltage etc. Eventually I concluded it was the regulator, bought a new one and managed, with some contortion... to change it without removing the alternator.
All was well for several months, but then the problem re-occurred. The voltage when running is 14.83 measured with a voltmeter at the battery. I do not seem to have the voltage measurement on the dash panel, the car was one of the early W203 models and does not appear to have this menu.
Apart from the Alternator / Battery warning light there does not seem to be a problem. The voltage doesn't appear high enough to cause a problem to the battery and all the electrics perform correctly, except for the automatic headlight function, which causes the headlights to go off momentarily when the warning light comes on, easily avoided by switching them on manually.
Any ideas please? Should I change the regulator again, I would like to avoid the expense of a new alternator if possible. Or could it be something more complicated?
Many thanks in advance.