Two problems related to battery have been reported for the 2006 Ford Five Hundred. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Ford Five Hundred based on all problems reported for the 2006 Five Hundred.
While driving the car rpm gauge was moving upward even though I was still at steady speed. When I slowed and stopped it appeared to continue to lunge forward. I was able to control since I had some distance from the vehicle in front of me. By the time I reached my destination I was afraid that it had a mind of its own. It settled when I tried to park for it then cut off. There have been numerous events when the car lunged forward or cut off while driving and even when I put the car in reverse. I had three (3) motor mounts replaced and new battery along with the safety sensor. It costs more to repair than general maintenance. I see why they stopped making this car. Its dangerous! I am now in the process of getting the throttle body replaced which may not be under warranty. This car should be recalled or we should be compensated for repairs related to this problem.
The instrument cluster checks normal on most start-ups, but unpredictably all systems light up showing failure of abs, air bags, traction control, electrical systems, see a mechanic, cruise control and speedometer quits working. The warning lights may stay lit for 2 to 200 miles. And no speedometer. Auto zone and my mechanic are baffled and frustrated after checking battery charging circuit connections and grounds. Its obviously not safe driving without knowing your speed or if there is a major hazard looming-----like fire.