2005 Ford Mustang Speedometer Doesn't Work When Cold

RAUKOLINAE

MEMBER
2005 FORD MUSTANG
6 CYL
2WD
MANUAL
70,000 MILES

A few weeks ago I noticed that my speedometer was off by about 10 mph when I was driving. At first I presumed it to be a battery problem. It was cold at the time, but I hadn't made the connection. After testing and replacing my battery I didn't see any problems since.
This past weekend I was leaving early in the morning, and it was pretty cold out, around the low to mid 40s. This is at the tail end of a Texas summer, so that is cold weather than what my car has been used to. When I started it up, my speedometer immedietly dropped below 0 and remained there for the duration of my drive. Later in the day, after the temperature rose, my speedometer worked fine. The next morning, the same situation happened again. Since then it has been warmer in the morning, and I have not had problems.

1 Reply

SSNOVAII

MEMBER
9 POSTS

This is a common problem specifically on the 2005 Mustangs. It's most likely caused by failing gauge motors inside the instrument cluster although I'm not familiar with the temperature being related. Keep an eye on it, it will likely get worse to the point where temperature no longer is a factor and it reads wrong most of the time.

You can get the cluster rebuilt at a repair shop - www. Drspeedometer. Com or you can perform the repair yourself with a guide such as - www.2005-mustang-speedometer-problem. Com

There is no factory recall on the issue and a replacement cluster at a Ford dealer will run between $400-$700.