Possible Causes
WARNING: This page is about a different car, the 2002 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- No vacuum to function selector switch.
- Function selector switch leaks vacuum.
- Vacuum line kinked/pinched.
- Leaking vacuum control motor.
- Leaking vacuum check valve.
- Leaking vacuum reservoir tank.
- Vacuum actuator arm not connected to door lever.