AdvanceTrac and AWD error

[brandip23]

I have had so much trouble with my ST giving me random Service advancetrac, awd not available, hill start assist not available. It is not predictable and can happen right after starting the car or while driving it. I lost my adaptive cruise control which includes regular cruise control yesterday on a 3 hour drive! Dealership tells me nothing is wrong. This didn’t start until I replaced the tires - same size as previous ones. Help!!

 

[themishmosh]

Sounds like a speed sensor malfunction. Maybe the connector is loosely attached, the cable was damaged or the sensor is failing?

There are a number of threads but here's one:

2020 Explorer Issues - 4WD Fault, Pre Collision Assist Not Available, Service Advance Trac

So for the 5th time my 2020 ST has lit up like a Christmas tree when getting off of the highway. Warning lights come all at once: 4WD Fault Service Required, Service AdvanceTrac, Pre-Collision Assist Not Available, +Hill assist not available + Auto Hold Fault. Warning lights immediately...

www.explorerforum.com

 

[Pedro504]

I have had so much trouble with my ST giving me random Service advancetrac, awd not available, hill start assist not available. It is not predictable and can happen right after starting the car or while driving it. I lost my adaptive cruise control which includes regular cruise control yesterday on a 3 hour drive! Dealership tells me nothing is wrong. This didn’t start until I replaced the tires - same size as previous ones. Help!!

I have a '21 platinum and have winter tires and wheels installed from Tirerack. No issues like you're experiencing.
However on page 372 of the manual in the Wheels and Tires chapter there is a section titled Tire Pressure Monitoring Reset Procedure.
Perhaps the same info is available in your ST manual and you should try this.

 

[SteveAZ]

Try This...

 

[peterk9]

I have had so much trouble with my ST giving me random Service advancetrac, awd not available, hill start assist not available. It is not predictable and can happen right after starting the car or while driving it. I lost my adaptive cruise control which includes regular cruise control yesterday on a 3 hour drive! Dealership tells me nothing is wrong. This didn’t start until I replaced the tires - same size as previous ones. Help!!

Welcome to the Forum.
It could be the sensor mentioned in the posted link. Some have also had issues with the wheel speed sensor.

Peter

 

[brandip23]

Try This...

So, no troubles since replacing the half shaft speed sensors??? All 4 were replaced? idk if there's 4 actually, lol.

 

[VARB]

I have had so much trouble with my ST giving me random Service advancetrac, awd not available, hill start assist not available. It is not predictable and can happen right after starting the car or while driving it. I lost my adaptive cruise control which includes regular cruise control yesterday on a 3 hour drive! Dealership tells me nothing is wrong. This didn’t start until I replaced the tires - same size as previous ones. Help!!

I started having similiar problems with my 2020 Limited. It started right after I took it in for the recall. Now it randomly cuts off and is in hill start assist mode. Can several minutes to run again. i took it to ford and they nothing is wrong. You still having problems?

 

[peterk9]

I started having similiar problems with my 2020 Limited. It started right after I took it in for the recall. Now it randomly cuts off and is in hill start assist mode. Can several minutes to run again. i took it to ford and they nothing is wrong. You still having problems?

Welcome to the Forum.
The member you quoted said that after they replaced the speed sensors that everything was okay.

Peter