2008 Lincoln MXK - Power seat
If it goes forward but not back the most likely suspect is the seat switch as it controls what way the polarity is switched to the motor.
Check your seat switch for contact points and continuity that's electrical energy
Check seat switch for contact points and continuity electrical power
Looking for a Used MKX in your area?
CarGurus has 12,825 nationwide MKX listings starting at $5,795.
Search Lincoln MKX Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Lincoln MKX Experts