Hey guys, I am experiencing some problems with my instrument cluster on my 2008 Ford Ranger 2.3L. I was wondering if anyone has any ideas of what might be the solution or what I should look for.

The instrument cluster turns on and off intermittently. When I put the key in the "on" position, all of the gauges work as they should: fuel, engine temperature, check engine, etc. When I start the engine, all of the gauges work as they are supposed to for a few seconds and then it goes out. When I turn on the headlights, the backlight on the instrument cluster is working regardless if the gauges are working or not. During the ride, the instrument cluster gauges (speed, RPM, fuel, engine, temperature etc) will turn on and off without me doing anything specific. When the gauge cluster is not working, there are not any noises associated, such as seatbelt, open door, parking brake on. When the gauge cluster is working, everything works perfectly.

The car has an after-market radio, which works without any problems. I unplugged it, but the problem with the gauge cluster persisted. I replaced the fuse for the instrument cluster, but it was not the problem. The battery voltage when the car is off is 12.7 and 14.3 when on. I disconnected the battery for an hour, but the problem still occurred after reconnecting it. Any ideas or suggestions?

 

Welcome to the forum

Google: Ford HEC test mode

Several videos and articles on what tests you can do

But it does read like cluster is shutting down, either because its losing 12volts or losing its ground, from vehicle, or it could be internal on HEC circuit board

Wiring diagram below, but 2004-2011 Rangers all have the HEC dash which is fully microprocessor controlled, so not alot of user repairs possible

And you can't "just swap" a cluster with another one, there are steps that need to be done to "marry" the new/used cluster to the vehicles other systems, this was because of odometer tampering
The HEC also has the PATS inside, it checks the transponder key number to allow start up

 

Easiest thing to check is to pull the connectors at the fuse box on the passenger side kick panel and check for corrosion. Corrosion at those connectors will cause all kinds of strange issues like what you're describing. Seems to be an issue on the 04-11 trucks as I've seen way too many instances of corrosion at those connections and very peculiar symptoms related to the corrosion.

As Ron said, If everything checks out on that end, you'll have to start looking into the gauge cluster and it's power supply.

 

Thank you Ron, I will follow your steps, also I was thinking to send the current cluster for a repair instead of getting a new one.

 

Thank you, I will pull it out tomorrow and update the post!

 

So after a while I did send my cluster toSo after awhile I did send the instrument cluster to a repair shop. It was there for a week and when it came back, it had the same issue as before plus other problems. So I sent it back to them and after another week, they solved the problem which was probably something in the mother board. If anyone has any questions, this is my email, Danielatspam1@gmail.com

 

Thanks for the update