Auxiliary Cabin Heater: Service and Repair

AR83.70-P-8001MEV Remove/install High-voltage PTC Heater
- MODEL 451.391/ 491







1 Screw
2 Cover
3 AC housing
4 Electrical connector
5 Screw
8 Ground cable
9 Screw

R23 High-voltage PTC heater
R23x1 High-voltage PTC heater electrical connector
W26 Ground (transmission tunnel)







6 Gasket
7 Gasket

R23 High-voltage PTC heater