Two problems related to tail light have been reported for the 2001 Ford Focus. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Ford Focus based on all problems reported for the 2001 Focus.
The plastic sockets in the rear taillight lens assembly melted. (these sockets hold the taillight bulbs in place. ) the taillight lens assembly was obviously made from inferior plastic material, because even the back-up light socket; which isn't used very often; was also melted. The Ford dealership wanted to charge $89. 00 just to look at the taillights, and just automatically stated that they weren't under warranty and that it would be around $250 for new lens assemblies, and another $45 to install them.
Went to replace the left tail light and the plastic housing was completely melted. Then, checked right and it started to melting. Contacted dealership, and said warranty expired, nothing they could do.