Total Meltdown - Help! - 2022 Expedition Max Limited

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

no MORE_MPG

Active Member
Joined
Aug 21, 2020
Posts
33
Reaction score
13
Location
Eastern Pennsylvania
Hello mdexp.
I'll share a story that may or may not be relevant.
Upon returning from a week of business travel, I found that I was not able to unlock my vehicle (not a Ford) with the keyfob. There was no sign of anything electrical going on at all. I had locked the physical key inside the vehicle (feel free to knock me for this). So, after calling for a back-up physical key, I opened the door and noted that the LCD odometer was blank.
I opened the hood, visually inspected the battery connections, which all looked normal. Upon touching the connections (not disconnecting, just touching), everything came to life and worked perfectly. The battery was fully charged.

The only conclusion that I could come to was that while the cables were connected physically, they were not connected electrically. There must have been some corrosion occur between the post and clamp.

In your case, there may have been a poor connection to the battery which confused the regulator causing it to tell the alternator to over-produce current (or maybe voltage). This is at least partially negated by the fact that it apparently started without issue using remote-start.

Best of luck getting this issue resolved! (or having it never happening again)

Ben
 
OP
OP
M

mdexp

Member
Joined
Apr 21, 2022
Posts
23
Reaction score
7
Location
maryland
When I used to work on Lexus vehicles at the dealership, we would occasionally get issues almost exactly like this. It was just about always the Amplifier for the sound system. We would replace them and it would be all good. Good luck.
That's great - with 2 replies pointing potentially to the amplifier it sounds promising. Appreciate it!
 
OP
OP
M

mdexp

Member
Joined
Apr 21, 2022
Posts
23
Reaction score
7
Location
maryland
I'll keep this updated in case anyone else has the same issue at some point... although not much of an update to give. I had it in the dealership today- they ran the normal scans and tried to reproduce the issue, but not surprisingly, were not able to find anything. I mentioned the amplifier as a potential culprit and also the sync3 test mode. He did not think it was a test mode because he indicated that normally moves from speaker to speaker. He did think the amplifier could potentially be involved, but couldn't find anything not functioning correctly.

If it happens again or I have any more info I'll update this thread.
 

Rob6805

Full Access Members
Joined
Mar 25, 2021
Posts
607
Reaction score
362
Location
49735
When it happened was the vehicle powered on? Either running or in aux mode?
 
OP
OP
M

mdexp

Member
Joined
Apr 21, 2022
Posts
23
Reaction score
7
Location
maryland
When it happened was the vehicle powered on? Either running or in aux mode?
I had remote started the vehicle, got inside, and powered on fully (pressed brake/hit start button) - it began making the noise immediately after I started the car.
 

Rob6805

Full Access Members
Joined
Mar 25, 2021
Posts
607
Reaction score
362
Location
49735
I had remote started the vehicle, got inside, and powered on fully (pressed brake/hit start button) - it began making the noise immediately after I started the car.
And the sound was coming from the speakers? All of them? You have B&O audio, right?
 

NC12South

New Member
Joined
May 1, 2022
Posts
3
Reaction score
5
Location
PA
I know this is not helpful, but my first thought was are you friends with James May or Jeremy Clarkson?
Will give you one more thought, if you are having any other electrical issues, have them check the harness below the battery. Mine had been stored somewhere before delivery where mice made just enough damage to create intermittent issues. Just a thought.
 
OP
OP
M

mdexp

Member
Joined
Apr 21, 2022
Posts
23
Reaction score
7
Location
maryland
And the sound was coming from the speakers? All of them? You have B&O audio, right?
The sound was coming from all speakers (the best I could tell- honestly it was so loud it was a bit hard to decipher). I do have the B&O sound system.

I know this is not helpful, but my first thought was are you friends with James May or Jeremy Clarkson?
Will give you one more thought, if you are having any other electrical issues, have them check the harness below the battery. Mine had been stored somewhere before delivery where mice made just enough damage to create intermittent issues. Just a thought.
Another good suggestion- I'll try to check this out to see if there could be any damage.
 
Top