Heater Core: Service and Repair

Replacing Heater Core (Automatic A/C)

Remove Heater Bulkhead.


WARNING:
Danger of scalding
Only perform this work after engine has cooled down.







Release hose clamps (1).
Detach water hoses (2) from flange (3). Carefully blow through lines to remove remaining coolant from heating element.

Installation Note: Fill and vent cooling system.

Remove trim panel for instrument panel.







Unclip air duct for left footwell (2) at mountings (1) and remove in direction of arrow.







Loosen screws (1).
Remove left footwell vent (2) in direction of arrow.







Loosen screws (1).
Pull out pipes (2) in direction of arrow.

Installation Note: Replace sealing rings.







Unhook holder (1).
Unclip heating duct for right footwell (2) and remove in direction of arrow.

Installation Note: Ensure heating channel for right footwell (2) is correctly seated.







Unclip air duct for rear footwell on right (1) and pull out in direction of arrow.
Cover air duct underneath.

For purposes of clarity, the following shows the heater/air conditioner removed.







Unclip clip (1).
Loosen screws (2).
Pull heating element cover (3) in direction of arrow out of guide.







Installation Note: Make sure guide is correctly seated.







Pull out evaporator temperature sensor (1) in direction of arrow and set to one side.
If necessary, remove servodrive of footwell flap and footwell flap (2) in direction of arrow.
Pull out heater element (3) in direction of arrow.


CAUTION:
Do not bend cooling fins.
If necessary, clean or align cooling fins with fin comb.