2002 Mercedes Benz S320

2002 MERCEDES BENZ S320
90,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
RON HARRIS
  • MEMBER
  • 1 POST
my heater is blowing cold air. It seems to be workinf ok except the warm air is not getting to the passenger cabin
Dec 3, 2008 at 6:33 AM
Advertisement
Avatar
GFIMOTORCARS
  • ✓Experienced Mechanic
  • 673 POSTS
This is often caused by a failed heater exchange valve. The exchange valve allows for coolant passange into the heater case, and when it fails results in cold air coming through the heat settings.
Feb 19, 2009 at 5:11 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle