VW Beetle Forum banner

Lighting and coolant warning problems!

3632 Views 10 Replies 8 Participants Last post by  John Koch
Hi all!

We have a 2000 beetle and occassionaly the blue low coolant temp light comes on (apart from the usual warm up period at startup) even when the car has been running for some time and in mild outside temperatures.

The other "strange happening" is that when idling and cold when the headlights are on, the lights "Dim" for a second or so every 20 or so seconds.

I have measured the voltage when this is happening and there is a distinct drop in voltage as if the alternator drops charging every now and then.

Anyone know why these things are happening??? The dealers are no help at all.

Thanks, Mark.
1 - 1 of 11 Posts
It took me awhile to find this thread. I'm glad (I guess) to see I'm not the only one. My blue temp comes on (no flashing) after 6 miles or more of highway driving (then goes off again, eventually). So I guess it's back to the shop..... again!
1 - 1 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.