Need some help

[mikefrancis1415]

I have a 2018 Ford Expedition. Everything was working perfectly, but after installing a new battery I’m having issues:

• Electronic parking brake shows a warning and won’t engage (no sound at all)
• Rear power seats are not working

It all happened right after the battery change. I’ve tried resetting it by disconnecting the battery, but no luck.

Just wondering if anyone has run into this before—could it be a fuse or something with power distribution?


Any help would be really appreciated!

 

[DieselMonk]

Read out the codes… must be complaining about something.

 

[Rob6805]

Did you reset the BMS?

 

[Stephen Dunster]

A A Battery Management System (BMS) reset recalibrates a vehicle’s computer to recognize a new battery or clear fault codes after a low-voltage event. For many Ford vehicles, turn the ignition to 'on' (engine off), flash high beams 5 times, and press the brake 3 times; a flashing battery light confirms the reset. recalibrates a vehicle’s computer to recognize a new battery or clear fault codes after a low-voltage event. For many Ford vehicles, turn the ignition to 'on' (engine off), flash high beams 5 times, and press the brake 3 times; a flashing battery light confirms the reset.

 

[Jamo]

That's almost funny. If the Cops see you doing that, you'll be a potential DWI arrest.

 

[GlennSullivan]

That's almost funny. If the Cops see you doing that, you'll be a potential DWI arrest.

If you have ever read the instructions for or done actual ODBII drive cycle tests (to bring all emission sensors online after disconnected or dead battery), then you know doing the on road portion of the test reads like "how to cause a car accident". LOL.

Before battery tenders were common, I did this every spring on several cars and learned really quickly that it should only be done very early on a Sat or Sun morning when few other cars were on the road.

Even so, other drivers still flashed lights, blew horns and provided the "you are #1" sign.

 

[5280tunage]

I'm not sure if it would help but I've also had weird experiences on these with short term battery disconnects. My advice would be to always unhook the battery, wait ten minutes or so before reconnecting. Sort of time for every cap to discharge and do a full power down of everything, then bring it back up.

 

[GixxerJasen]

A A Battery Management System (BMS) reset recalibrates a vehicle’s computer to recognize a new battery or clear fault codes after a low-voltage event. For many Ford vehicles, turn the ignition to 'on' (engine off), flash high beams 5 times, and press the brake 3 times; a flashing battery light confirms the reset. recalibrates a vehicle’s computer to recognize a new battery or clear fault codes after a low-voltage event. For many Ford vehicles, turn the ignition to 'on' (engine off), flash high beams 5 times, and press the brake 3 times; a flashing battery light confirms the reset.

From my 2019 owners manual under the BMS section:

After battery replacement, or in some cases after charging the battery with an external charger, the battery management system requires eight hours of vehicle sleep time to relearn the battery state of charge. During this time your vehicle must remain fully locked with the ignition switched off.

Is the above reset procedure still necessary and is that something a dealership would do after replacing the battery?