What does the yellow wrench light mean? I was having some issues tonight. Have 6000 miles on my 2017 2.7 and had no issues so far. I just had the windshield tinted so I'm worried the water from them doing that might've slipped behind the dash. So the truck would stop accelerating and the teach would go to 0 but the truck would still maintain speed like on cruise control. It would act like the engine cut out when in reality it didint. Pulled over twice on my way home, shut off the truck and started back on. The second time I restarted the truck after the issue happening again along with some really weird shifting in the transmission and there was no wrench light and no hiccups the rest of the way home. Started it again in my driveway, drove around the block...no problem or wrench light. Then restarted the truck several times in the driveway no issue and the light did not come back on. Hopefully it's gone. I put the heat on full blast to drive out any moisture and it seemed to help the issue. But, has anybody ever experienced this? Ive seen electronics get wet, do some funky stuff, then work fine once they dry out. It dosent always fry it. So hopefully that's all it is. It was def a computer issue because it thought the engine was off when it was on and it was shifting like I was accelerating when I was not.

 

It most likely threw a code with that wrench light. Auto zone can check it for you if your curious but 6000 miles I would go to Ford

 

I have a code reader I can try. I have a adapter for ForScan also. If it dosent happen again, I can't see going to the dealer. Electrical stuff either fries itself when wet or just acts funky till it dries out. It seems fine now, so im thinking some water got down in there then dried up and didint cause permanent damage. I hope that's what happened. Just wondering what the difference is between the wrench light and the actual check engine light?

 

If you post the DTC I will gladly look to see of there is an SSM or TSB associated with the DTC.

 

6K 2017 under warranty, take it to the dealer let them asses it and make a record for the future

 

Wrench light means you need maintenance done.. maybe an oil change ? 6K miles. It’s different from a engine light..

 

From your Owner's Manual...

 

No codes with my standard OBDII code reader I have at home. Borrowed my friends more sophisticated code reader and got P166A and U0140.



These are all stored codes of course. The wrench light has been off the past two days, has not come back on, and no issues. I don't know if it's worth the hastle of taking it to the dealer if the problem is no longer there or dosent come back. They wanted me to leave it for the day just to look at it. I believe the electronics involving these codes is behind the dash, at least the body control module, so moisture from the tint job could've been a culpret. I read somewhere where someone got the P166A code after washing their truck. And I think if it suffered permanent damage, it would continue to malfunction and not be working normally.

 

SSM 46978 - 2017-2018 F-150 - 3.5L GTDI - No Crank/No Start, Multiple Illuminated Warning Indicators And/Or DTC's - Built On Or Before 29-Sep-2017

Some 2017-2018 F-150 vehicles equipped with a 3.5L Gasoline Turbocharged Direct Injection (GTDI) engine and built on or before 29-Sep-2017 may exhibit a no crank/no start, auto-start-stop inoperative, illuminated malfunction indicator lamp (MIL) and or powertrain malfunction indicator lamp, transmission shift issues, DTC P061A, U0140, U0401, U0101, U0074 and/or U0037 being set in the PCM, TCM, IPC, FCIM, ABS and/or PSCM. This may be due to the 15525 transmission wire harness not being properly secured. Visually inspect the harness for possible damage and proper routing at the rear of the engine down to the transmission. Repair as necessary. If no damage is found, proceed with normal diagnostics

SSM 46902 - 2015-2017 F-150 - Intermittent Inoperative Air Conditioning (A/C)/Radio/Power Window Switch Control - Multiple Illuminated Indicators And/Or DTCs

Some 2015-2017 F-150 vehicles may exhibit intermittent and/or inoperative A/C, radio, and/or power window switch control with multiple illuminated warning indicators and/or diagnostic trouble codes (DTCs) U0140, U0155, U0253, U0401, and/orU0452 stored in the front controls interface module (FCIM). This may be caused by excessive network traffic on the controller area network (CAN) Bus causing the FCIM to lock up. Before replacing the FCIM, complete a battery reset, clear all DTCs and run a FCIM self-test. If the issue is still present, follow normal diagnosis. For claiming, use causal part 18842 and applicable labor operations in section 10 of the service labor time standards (SLTS) manual.

 

My wifes edge threw the wrench, pulled over and called me after she could barely get off the freeway in her edge. When I got there to drive to the dealer, it all drove fine and wrench went away.

Dealer pulled codes and replaced throttle body per Ford.

Take it in, before you possibly get stranded. Never, never clear codes.

Just my opinion.