What could cause loss of power to dash display, radio, heater controls ? - Subaru WRX Forum
 
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#1 Old 12-11-2012, 02:29 PM
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What could cause loss of power to dash display, radio, heater controls ?

Ok, I was heading home from work a few days ago and noticed that the dash display in my '09 REX (that shows temp/mileage/time) was out. In further checking, I discovered the radio and heater/ventilation controls were out as well. wtf. The car seemed to drive ok, so I proceeded across town.

I then pulled every fuse out of the fuse box, and inspected it for being blown and re-seated. None were blown. Tried to start the car, and after about 5 seconds of cranking, it finally started. I soon noticed that it was not boosting, and seemed to be in a limp-home mode. I reset the ECU and then reflashed. Everything is now working ok for the last few days.

My concern is that if it had been real cold or dark that day, that I would not have had defrost or lights, and would have been totally screwed.

Any idea what may have caused this issue? Some other people have suggested a bad ignition switch. The only clue I have to relate to that is when I was going to reflash with my AP, it asked several times to "TURN IGNITION KEY OFF AND THEN BACK ON" before it would allow me to proceed to do the reflash.
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#2 Old 04-29-2013, 02:04 PM
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Hey I just got this identical problem on my way home from work today and was wondering what the outcome ended up being?
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#3 Old 04-30-2013, 09:12 AM
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Not sure on this but just gonna throw it out there. Maybe a relay going bad????

Adair
06' wrx tr
Phatbotti tuned!
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#4 Old 05-03-2013, 12:30 PM
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The problem has not re-occurred. It must have been a loose relay or some contacts in the ignition switch that did not line up right.
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#5 Old 05-14-2013, 08:55 PM
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I am experiencing similar issues currently but only difference is that my car died and can't restart. I jumped it and it started but wouldn't re start. I'm wondering if its the ignition switch, alternator or sbf fuses
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