barnaclebill15
Senior Member
- Joined
- Mar 24, 2015
- Messages
- 297
- Reaction score
- 94
- Location
- newcastle upon tyne
- Your Mercedes
- clk220cdi/2006/diesel
In this cold weather I have noticed the air from the cabin vents is tepid at best even with engine temp at 88C. The cabin vents work ok and cycle when you try reset.
The best thing I can do is leave system in manual and turn both heater knobs to max and set the fan to a low setting then it will slowly get a little warm, if I leave it in auto the fan will go to high speed as it detects a cold cabin but you get more cold air than warm
I presume the resetting of the cabin flaps does not include the blender flap?
I do not think it's a blocked heater as when I first got this car if I wanted to make it a little warmer and set both temp controls up one or two clicks when in auto it would go to high speed fan and very hot then go to low speed and the AC would kick in for a few seconds cooling so I used to leave the temp setting on the mid point 22 and it would work ok warmish in winter and give some cold air in summer ( if it got hot up here in the north).
I suspect the blender flap/actuator motor system, can this be checked on STAR and can it be moved by STAR? If not it will be a dashboard out job
The best thing I can do is leave system in manual and turn both heater knobs to max and set the fan to a low setting then it will slowly get a little warm, if I leave it in auto the fan will go to high speed as it detects a cold cabin but you get more cold air than warm
I presume the resetting of the cabin flaps does not include the blender flap?
I do not think it's a blocked heater as when I first got this car if I wanted to make it a little warmer and set both temp controls up one or two clicks when in auto it would go to high speed fan and very hot then go to low speed and the AC would kick in for a few seconds cooling so I used to leave the temp setting on the mid point 22 and it would work ok warmish in winter and give some cold air in summer ( if it got hot up here in the north).
I suspect the blender flap/actuator motor system, can this be checked on STAR and can it be moved by STAR? If not it will be a dashboard out job