Possible Causes
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
- Inoperative ICM.
- Inoperative heated backlight relay.
- Short to voltage in circuit 186 (BN/LB).
- Short to ground in circuit 688 (GY/LB) or 1009 (OG/YE).
- Inoperative DATC or manual climate control assembly.