What you describe isn't unusual, depending on how long it stays on.

On these old cars, the voltage regulator needs to "wake up" to start the charging cycle and generally doesn't do so until the RPMs pass 1200.

On really cold mornings I have to goose my 300d well beyond that in order for the light to go off.

(An electrical purist will shortly eviscerate me for the underlined part of the explanation, but the general thrust of my answer is sound.)

If you are on the road with normal transmission shifts and the light is still on, then you need to check the charging system.

__________________


Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22