ChrisEdu
MB Enthusiast
- Joined
- Sep 5, 2005
- Messages
- 8,326
- Location
- By the southern sea
- Car
- E320CDi Estate - gone E320CDi Saloon - written off CLS 350CDi Coupé
Leave them alone. If they need doing the car will let you know - you'll see the pre-glow light staying on after starting the car. My old 210 had the warning light come on, but the car still worked fine, so I didn't bother.