2019 Expedition Max - Numerous Faults - Brakes

[dryan117]

OK, This morning went to start my 2019 Expedition Max and it would not start - pressing the start button turns the electrical but will not enable the starter to turn over the engine. The dash reported the following faults:

Park Aid Fault
Pre-Collision Assist Not Available
Service AdvanceTrac
Park Brake Limited Function Service Required
See Manual
Blind Spot System Fault
Cross Traffic System Fault
Hill Decent Control Fault
Hill Start Assist Not Available

Also, the brake pedal feels "Hard" and putting on and taking off the parking brake seems OK - you can hear the electric motors whirrring. The gear selector dial has Park "P" flashing, and will not move, even with the screwdriver in the center consol slot trick. I replaced the battery and it is tested good. I have no idea what is going on. Ran fine on Saturday! No obvious damage or mud on the parking sensors. No visible bad fuses. Any thoughts? I'd hate to have to get it towed to the dealer, plus with it stuck in Park it will need to be flatbeded!!

 

[99WhiteC5Coupe]

OK, This morning went to start my 2019 Expedition Max and it would not start - pressing the start button turns the electrical but will not enable the starter to turn over the engine. The dash reported the following faults:

Park Aid Fault
Pre-Collision Assist Not Available
Service AdvanceTrac
Park Brake Limited Function Service Required
See Manual
Blind Spot System Fault
Cross Traffic System Fault
Hill Decent Control Fault
Hill Start Assist Not Available

Also, the brake pedal feels "Hard" and putting on and taking off the parking brake seems OK - you can hear the electric motors whirrring. The gear selector dial has Park "P" flashing, and will not move, even with the screwdriver in the center consol slot trick. I replaced the battery and it is tested good. I have no idea what is going on. Ran fine on Saturday! No obvious damage or mud on the parking sensors. No visible bad fuses. Any thoughts? I'd hate to have to get it towed to the dealer, plus with it stuck in Park it will need to be flatbeded!!

From afar - a bad battery and/or loose or corroded battery terminal connectors.

You said you replaced the battery - but was it fully charged? Did you use a new battery?

 

[dryan117]

Battery is good. Brand new, charged up

 

[2020-MAX-Limited]

OK, This morning went to start my 2019 Expedition Max and it would not start - pressing the start button turns the electrical but will not enable the starter to turn over the engine.

Brake pedal must be pushed to enable start, even if it is a hard brake pedal. It does not need to depress a lot, just a little to activate the brake pedal switch. When you push the brake pedal, the green LED in the power button illuminates to indicate starting is enabled. If the green LED does not illuminate, you will get 12V power, but no crank.

Possible brake pedal switch fault. When pushing the brake pedal, do your brake lights illuminate?

 

[dryan117]

Brake pedal must be pushed to enable start, even if it is a hard brake pedal. It does not need to depress a lot, just a little to activate the brake pedal switch. When you push the brake pedal, the green LED in the power button illuminates to indicate starting is enabled. If the green LED does not illuminate, you will get 12V power, but no crank.

Possible brake pedal switch fault. When pushing the brake pedal, do your brake lights illuminate?

Green LED lights, Brake lights are functional while pressing brake pedal.

 

[duneslider]

Probably gonna need some diagnostics. Curious if you live in a Salt state where the roads get a lot of salt or near the ocean? I am leaning towards a poor ground connection someplace.

 

[LegalBrief]

Bad battery… go get it deep tested. Did you pair the battey, are all the battery connectors tight, none broken?

 

[Yupster Dog]

Battery is good. Brand new, charged up

I fourth what the other three members that posted you need to check battery cables/possible lifted ground.
When multiple systems go at once, more times than not it is a lifted ground.

Easiest way to check,
Do a "Voltage Drop Test" to make sure all battery cables and connections are good and you are not loosing voltage thru a bad connection/cable.
Do this on the positive side and ground side of the battery.

 

[dryan117]

OK, This morning went to start my 2019 Expedition Max and it would not start - pressing the start button turns the electrical but will not enable the starter to turn over the engine. The dash reported the following faults:

Park Aid Fault
Pre-Collision Assist Not Available
Service AdvanceTrac
Park Brake Limited Function Service Required
See Manual
Blind Spot System Fault
Cross Traffic System Fault
Hill Decent Control Fault
Hill Start Assist Not Available

Also, the brake pedal feels "Hard" and putting on and taking off the parking brake seems OK - you can hear the electric motors whirrring. The gear selector dial has Park "P" flashing, and will not move, even with the screwdriver in the center consol slot trick. I replaced the battery and it is tested good. I have no idea what is going on. Ran fine on Saturday! No obvious damage or mud on the parking sensors. No visible bad fuses. Any thoughts? I'd hate to have to get it towed to the dealer, plus with it stuck in Park it will need to be flatbeded!!

It was a cracked housing on the Transmission Control Module - moisture got in and fried the circuit board. $1k fix.

 

[Hellwig]

It was a cracked housing on the Transmission Control Module - moisture got in and fried the circuit board. $1k fix.

Where is the TCM located? Somewhere on chassis?