Yesterday I went to a local independent shop that has a professional scan tool with up-to-date software. I told them about my problem and they were fairly confident they could help me. These guys could clear the TPMS code, but they said it would immediately come back. After trying various things, they gave up after about 10 minutes. They were as bummed as I was, and they were nice enough not to charge me even when I offered to pay for their time.
So the car went to the Mitsubishi dealer this morning...and my TPMS light is finally OFF!!!
I left the car this morning and gave the service advisor a brief rundown of my issue.
I believe the error code in my TPMS system was for an unregistered sensor. The tech hooked up the Mitsubishi scan tool and checked all 4 TPMS sensor IDs stored in the car's computer. Then he walked around and checked the IDs of each of the 4 TPMS sensors in the wheels...and they didn't match! All the tech had to do was to clear the TPMS trouble code and register the existing sensors...and BOOM...no more TPMS problems!
As crazy as this sounds, supposedly the TPMS sensors in my new wheels were not the original sensors from my OEM alloy wheels! Or at least that's what the dealer said. What the #@$! How is that possible? I don't know what happened at Discount Tire...maybe they broke one of my original sensors and they just replaced them all without telling me? I don't know, and at this point I don't really care. It cost me $100, but I'm just happy that it's fixed. Unless I was the one working the scan tool and looking at the TPMS sensor IDs myself, I'm not sure who I believe at this point.
So you may be thinking... If this guy has the ATEQ Mitsureset tool, why didn't he just use that to register his existing sensors? I think the ATEQ tool would have worked IF my TPMS light wasn't flashing.
The issue for me was that once I drove the car with unregistered sensors in the wheels, it set a TPMS trouble code. If there are trouble codes in the TPMS system, then you can't use this (or any) tool to register the sensors until the codes have been erased. You have to clear the TPMS codes first and THEN you can register sensors. That's right out of the 2015 Mirage service manual.
The real killer is that as best as I can determine, nothing short of a full-blown Mitsubishi scan tool will clear TPMS codes in our cars. So if your TPMS light is flashing, you are pretty much heading to the dealer to find out what the problem is and have the code cleared from the system before doing anything else. I guess that's the lesson learned from this experience.
Last edited by Top_Fuel; 05-19-2016 at 12:16 AM.
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View my fuel log 2015 Mirage ES 1.2 manual: 52.2 mpg (US) ... 22.2 km/L ... 4.5 L/100 km ... 62.6 mpg (Imp)