Dreaded wrench light

5LHO said:

Bear in mind, I have a GT500 TB and Roush blower here so, parts are stock, at least for something, if not a 2014 GT.

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Mine did that a few times when brand new & completely stock. Ford told me it was an Advancetrac wheel speed issue. Undetected wheel spin on gravel or similar, causes this all the time according to Ford. Other possibilities include, a faulty wheel speed sensor, bad connection or electrical issue related to the wheel speed sensor.

They found no issues with mine, and said that if I turn-off Advancetrac each time after starting, it won’t reoccur. They were correct. It never happened again, once I started doing that.

Also, having a supercharger installed, increases the chances this will happen, unless you seriously featherfoot it. If this was the only time for you, I’d start driving with Advancetrac deactivated, and see if it goes away. If not, then you probably have an issue to address. If this cures it, it was a fluke that may, or may not, happen again based on road / driving conditions.

We shall see...the car is getting new 285/35/19 Goodyears installed this week. There are apparently a number of things that can cause this but, they all don't throw codes. My last S197 would occasionally have a giant Advancetrac freakout and require me to pull over, shut it off and restart. Why I thought about the TB cause was the engine started running rough and not taking throttle.

Speaking of tires....recent fun at the dragstrip on my slicks were, they tried to kill me multiple times. I could not get the car settled to run a full pass and, the freakout moved closer to the start line with each hit. This wasn't the usual slick float, the weight would come off the tires and they'd try to drive me over centre or into the wall. Bald street tires go on and it's straight as an arrow. I guess ten years is outside the lifespan of these Hoosiers, har. I pulled them off thee rims and nothing appears wrong, no shifted belts, bubbles, nothing. Weird.

5LHO said:

Speaking of tires....recent fun at the dragstrip on my slicks were, they tried to kill me multiple times. I could not get the car settled to run a full pass and, the freakout moved closer to the start line with each hit. This wasn't the usual slick float, the weight would come off the tires and they'd try to drive me over centre or into the wall. Bald street tires go on and it's straight as an arrow. I guess ten years is outside the lifespan of these Hoosiers, har. I pulled them off thee rims and nothing appears wrong, no shifted belts, bubbles, nothing. Weird.

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Perhaps the rubber compound is losing it’s oils unevenly.

5LHO said:

We shall see...the car is getting new 285/35/19 Goodyears installed this week. There are apparently a number of things that can cause this but, they all don't throw codes. My last S197 would occasionally have a giant Advancetrac freakout and require me to pull over, shut it off and restart. Why I thought about the TB cause was the engine started running rough and not taking throttle.

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Mine didn’t throw any codes either, only a wrench light & rough running.

crjackson said:

Perhaps the rubber compound is losing it’s oils unevenly.

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Time to retire em, regardless. They have been in the same climate controlled environment bagged when not in use but, hey, looks like I'll never know.

Any updates?

Has not returned subsequently....I was gently beating on it before I pulled up to a restaurant for lunch, maybe it just got flustered.