This results in audio chimes converting to the harsh dash tone instead of the premium tone.
When the car goes into sleep mode after being turned off, it will report back a different charge level (and it is not the battery itself being the issue), to which if the value is under 80% (or maybe 70%) the audio door chime and parking sensors will change.
I went to the dealership to do a FORScan reading on another 3.0T MKZ and even a Continental. Both exhibit similar behavior. This at least tell me it is not just my MKZ, but means there isn't a "fix" yet for it either.
I would like to know if other 3.0T owners have noticed thier door and sensor audio chimes changing between speaker and instrumental panel tone.
The other issue is BATTERY_TYPE in Ford IDS and FORScan have no listed value. This reports back as "error" and affects how efficiently the alternator performs at keeping the battery charged. With FORScan, I modified mine to the same default value via AS BUILT data to my 2014 Ford Fusion, and noticed my charge states do not decline as much prior.
I suspect initial factory programming is not quite right on these 3.0T vehicles. As a result they may exhibit strange voltage behavior at times.
There also seems to be faster drain issues if I shut down the vehicle with Auto Hold on and no e brake engagement. Now, I turn off the vehicle with Auto Hold off and engaging the E Brake switch instead.
If so, there isn't a fix for it yet but would help to get your dealership to report Lincoln on the issue, so they may work on updating the BSM to not irregularly report battery charge states. It can result in performance issues, as the ECU will attempt to cut back voltage power on various components.
For now just have to live with it...but its going to affect my choice on buying out my lease if not resolved by the end.
Be weary if letting the vehicle sit for long periods of time. Sitting 24 hours seems to get a charge loss of 10-15%, which is massive for when the vehicle is supposed to be asleep. It is restored quickly once the car is up and running, especially with a proper Battery Type setting (I use Varta 60ah 520CCA H5 Case) wheras my actual battery is the XS Power D4900 LN5 AGM. Stock batteries will be even worse in losing charge if there is a power programming issue when the car is shut down.
A 3.0T MKZ I tested on my dealership's lot had a battery charge reading of 25%. It did the dash board harsh chimes instead. Its battery age was 126 days and battery type was error.
All connections and ground points have been checked extensively by myself and my service dealer. No faults traced otherwise.
TL;DR: 3.0T engine vehicles are coming from the factory with Battery Type error and higher discharge rates while vehicle is asleep. No physical part faults found and believed to be a programming flaw. Affects audio chimes as vehicle thinks the battery is under charged.
Band aid fix: modify Battery Type in as built data to proper listed choice (FORScan/Ford IDS)
Edited by Zalvern, 08 November 2016 - 12:53 PM.