Weird left mirror behavior when reconnecting (new) battery.

[Elp_jc]

Hey gang, just want to know if what happened to my car is normal. After reconnecting the battery, due to a replacement from flooded-cell stock to an AGM from Advanced Auto (same 96R size), something weird happened. All Sync settings were retained, surprisingly (including radio presets). Same thing with the windows auto-up/down feature. And apparently the seat memories were retained too, but when I tried the button #3, the seat went back to the correct position, but a second later the freaking left mirror started bouncing at the top of the adjustment (TACK, TACK, TACK....) until I figure out how to stop it (click on the left mirror button, then one of the arrows). Geez. It probably bounced like 10 times. Caught me off guard.

Has that happened to anybody? Any possible damage from that? Apparently the memory settings got corrupted. I already re-recorded all 3 of them, but haven't tried if they work without the mirror acting up (hopefully not). Anyway, it's not a big deal having to redo all 3 memories after a battery disconnect, but just want to make sure that weird behavior is 'normal', as in other cars do it as well. Or what can be wrong? The door module (DDM, in this case)? Would a reset thru FORScan help? All comments welcome. Thank you.
JC

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[Bikeman315]

Hey gang, just want to know if what happened to my car is normal. After reconnecting the battery, due to a replacement from flooded-cell stock to an AGM from Advanced Auto (same 96R size), something weird happened. All Sync settings were retained, surprisingly (including radio presets). Same thing with the windows auto-up/down feature. And apparently the seat memories were retained too, but when I tried the button #3, the seat went back to the correct position, but a second later the freaking left mirror started bouncing at the top of the adjustment (TACK, TACK, TACK....) until I figure out how to stop it (click on the left mirror button, then one of the arrows). Geez. It probably bounced like 10 times. Caught me off guard.

Has that happened to anybody? Any possible damage from that? Apparently the memory settings got corrupted. I already re-recorded all 3 of them, but haven't tried if they work without the mirror acting up (hopefully not). Anyway, it's not a big deal having to redo all 3 memories after a battery disconnect, but just want to make sure that weird behavior is 'normal', as in other cars do it as well. Or what can be wrong? The door module (DDM, in this case)? Would a reset thru FORScan help? All comments welcome. Thank you.
JC

Welcome to the S550. This has been an issue since the 15' model was released. There is no real fix. The dealer may replace the mirror. When it starts doing it (I had it on my 15' EB) I just hit the toggle left, right, up, or down. It stopped it. There is a large thread on here somewhere if you are up to searching for it.

 

[Louk]

this isnt mustang specific, i had it happen in my 2014 fusion. so it sounds like its something to do with the memory features as any ford i have had without memory has never done it.

 

[Bikeman315]

this isnt mustang specific, i had it happen in my 2014 fusion. so it sounds like its something to do with the memory features as any ford i have had without memory has never done it.

That may certainly be the issue. Here is one of the early threads on this.

https://www.mustang6g.com/forums/threads/side-mirrors-acting-crazy.26495/page-2#post-747330

 

[S550_GTCS]

Both my mirrors do it all the time. Just hit the memory button again and it will go back to your preset position. It's like it forgets what its doing.

 

[Bikeman315]

Here's the latest one. Enjoy!

https://www.mustang6g.com/forums/threads/side-view-mirror-malfunction.40249/page-4#post-2791820

 

[I Bleed Ford Blue]

Both my mirrors do it all the time. Just hit the memory button again and it will go back to your preset position. It's like it forgets what its doing.

X2, my explorer does it too.

 

[Elp_jc]

Just hit the memory button again and it will go back to your preset position.

Hey, thank you for posting that solution; greatly appreciated. Was thinking of maybe resetting the DDM and PDM modules, and since it seems to be the BCM, I could reset that one too. It didn't do this before the battery change; what the heck could have triggered it? Hard to believe it's been happening since 2015, and Ford hasn't fixed it yet. Damn.

Oh, and it gets better folks. My stupid reverse light was ON all the time. I said to myself 'WTF now'? Put car in reverse, and the camera came on, as expected, so it's not the tranny switch. Put it back in N, camera off, but light stayed on. Went to do some errands, and on the way back thought maybe it was the new LED light that it stayed partially on, so I was going to remove it and replace with the OEM bulb and see what happened, and lo and behold, the stupid light was off now. Geez. Put car in reverse, and it was on, so operating normally. What the hell could have happened? Which module controls the reverse light? I have a serious electronic gremlin going on. What can I reset to try to put the car back to normal? My car was functioning well after the few FORScan changes I made. It all started with the battery change. Comments welcome.

EDIT: Forgot to say my radar detector is not working either. It's connected to the mirror via a MirrorTap. Not sure if something happened to it, or the mirror doesn't have power either. Need to investigate that. Damn. Not a good ownership start with all this crap :(.

 

[I Bleed Ford Blue]

With everything being electronic, sometimes these gadgets have what I like to call an electronic brain fart. They get stuck in a loop of bad programming and just get confused. When something like that happens, the best solution to reset it is to shut off the car and open the drivers door. Just shutting it off does not reboot everything, you have to open the door. By opening the door it shuts down everything.

 

[Elp_jc]

I programmed the mirrors down on position #3, and when I clicked the #1 memory to put things back to normal, nothing happened. The stupid reverse light is now off, hopefully for good. My V1 is not working yet, and just tried my brother's unit, and it doesn't work either, so it's not the detector itself (good). Just checked the fuse list, and #23 on the passenger side is for the rearview mirror... BUT it's also for the windows and switches (whatever that means), and since the windows are working fine, no sense in checking it IMO. It's probably the stupid MirrorTap cable; will order another one.

Might reset the DDM, PDM, and BCMs, and see what happens. Could also reset the BCM with the original as-built file, then just reprogram the 4 lines I changed, in case something got messed up during the battery install. Or should I leave things alone? What really baffled me is the reverse light on (but not the camera). Any ideas what could have caused that? Or at least which module? Thx.

 

[Bikeman315]

I programmed the mirrors down on position #3, and when I clicked the #1 memory to put things back to normal, nothing happened. The stupid reverse light is now off, hopefully for good. My V1 is not working yet, and just tried my brother's unit, and it doesn't work either, so it's not the detector itself (good). Just checked the fuse list, and #23 on the passenger side is for the rearview mirror... BUT it's also for the windows and switches (whatever that means), and since the windows are working fine, no sense in checking it IMO. It's probably the stupid MirrorTap cable; will order another one.

Might reset the DDM, PDM, and BCMs, and see what happens. Could also reset the BCM with the original as-built file, then just reprogram the 4 lines I changed, in case something got messed up during the battery install. Or should I leave things alone? What really baffled me is the reverse light on (but not the camera). Any ideas what could have caused that? Or at least which module? Thx.

The more things you play with the more things can go wrong. You seem to like playing around a lot. Wonder if that playing is causing some of your issues. You do have a lot more of them than most folks on here.

 

[Elp_jc]

Only made 10 popular changes, so hardly record-breaking, or controversial. Attempted reverse tilt, and something else, but didn't work, so just put them back to what it was, and zero issues. Car was perfectly fine until the battery change, so nice try . Sounds like you're jealous or something; nothing better to do?

 

[Bikeman315]

Only made 10 popular changes, so hardly record-breaking, or controversial. Attempted reverse tilt, and something else, but didn't work, so just put them back to what it was, and zero issues. Car was perfectly fine until the battery change, so nice try . Sounds like you're jealous or something; nothing better to do?

Jealous, damn straight. I really wanted a Bullitt but my left knee wouldn’t allow the M6. Time on my hands, more than I care to mention.

Unfortunately you seem to have a problematic car, at least so far. Hopefully they are just new car gremlins and will go away. Keep playing and good luck.

 

[m3incorp]

My mirror tap kept breaking a pin, so I ended up hardworking via strip wire and crimp....can be tight in there. If you don't mind running the wire, you can go under headliner and down to fuse #23. I ran the remote turn on for my subwoofer to this fuse and works great.

EDIT: Forgot to say my radar detector is not working either. It's connected to the mirror via a MirrorTap. Not sure if something happened to it, or the mirror doesn't have power either. Need to investigate that. Damn. Not a good ownership start with all this crap :(.

 

[Elp_jc]

Thanks guys. Fuse #23 is the one for the rearview mirror, by the way... along with the windows and 'switches', whatever that means. Do any of you know how you can tell if the mirror has power, without having to take apart my V1 setup now, and check with a multi-meter? My mirror has no freaking buttons at all, and apparently not even a light that it tells owners the auto-dimming feature is working. If it has power, then I'd just order either another MirrorTap, or more likely, a hardwire kit, and take things apart once it gets here. If it's the mirror cable, the fuse might have blown out during the battery reconnection. But it's internal, so can't be replaced; that's why a hardwire kit is better. Was just trying to avoid taking more things apart. Ha ha. But maybe the cable can be hidden inside the headliner without removing any parts, no? Is that the case?

Finally, that's my only issue left with the car, and if the mirror has power and it's working properly, it's not the fault of the car. The reverse bulb lighting up was a head-scratcher, and still don't know which module is responsible for that (BCM too?), but it's fine now. I initially thought it was the LED bulb I just installed not being CANbus compatible, but since it's off now, it was probably a gremlin too. The side mirror doing that bouncing is not a big deal if only happens when pressing a memory button, which I hardly ever do. And it's apparently easy to correct by just clicking the button again (need to try that). Those 2 things might have been a gremlin caused by disconnecting the battery. I'm not going to reset anything unless something happens again, Then I'd reset the DDM, PDM, and BCM modules.

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