Red BATT light

[Keith2]

The 'red' BATT warning light occasionally flicks on and then goes out at higher revs (2500+) but never below 2500. The higher the revs the more it is likely to show. Strangely enough it happens less when the sidelights are on and even less with headlamps. No problem with the battery. Anyone have a clue?

its a W210 '99 E300TD 66k

 

[kiwi_bloke]

simple but ussually costly

Id think its something with your alternator. First check the brushes and then get the voltage regualator tested.

good luck

josh

 

[dieselman]

The mileage is low for a worn out alternator, but it would be worth checking the connections are all tight as it sound like engine viabration may be playing a part in this.

 

[andy_k]

sounds very much like the regulator is playing up.

Andy

 

[Keith2]

Thanks for the info. i checked the battery terminals and although they seemed OK I took them off, cleaned them, retightened and it seems to have been OK since. Fingers crossed

 

[piestore]

red light

Hi

Hope its fixed but if it does come back it's quite common fore the signal wire to break internaly near the alternator. just worth a check