Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Heater won't work on 1990 Mercedes-Benz 300SL

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
this car is actually a 1984 380SL . It only blows cold air and no warm or hot air at all, even in the heat position. I wonder if the diverter door is stuck.....or..... any help out there? Just purchased this vehicle and ordered the Owner's Manual.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
I would check the radiator hoses to make sure that they are really hot, if not, it is most likely your thermostat.
Didn't find what you were looking for?