new issue! whats this code?

[freeform911]

what’s up guys
so i open mhd app today to monitor my car and it tells me i need to reflash my tune to update mhd app..
i try and reflash..it show connecting to ecu then goes through all the prepping stages then to communicating with dme…
that’s as fair as it get then pops up a stopped flashing error…

NOW THE DAMN CAR WONT START!
i’ve tried reflating back to stock power and nothing..same process as above…

now i have the battery disconnected…
hoping someone might be able to assist on get my car back up n running..
TIA
Steve

yes the car was on battery tender all doors closed lights off ac off radio off..

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[MisterSkiz]

Not MHD, but with BM3 I had issues using the app on my android phone (S22) and flashing. Now, I just use the laptop and ethernet to ODB2 dongle and no issues.

 

[freeform911]

i was able to get the reflash done just now… heart was in my stomach
thanks steve

 

[MisterSkiz]

Easter Miracle! What was the issue?

 

[freeform911]

for sure an easter miracle.. haha
not really sure.. disconnected the battery for 15-20 mins and retried..
cars runs but now have a few errors..
passenger restraint and chassis error..
may needed to reflash.. but i’ll drive it n clear any codes n see how it goes..
steve

 

[freeform911]

so after the reflash i now have
chassis stabilization error
driver assistance reduced
pedestrian warning
front collision error

i’ve tried disconnecting the battery.. no fix
i’ve tried reflashing.. no fix
i’ve replaced the battery… no fix ( yes registered and car start much now)
i’ve tried clearing the codes
both through mhd and my scan tool…no fix

anyone run into anything similar?
wondering if i just need to put some miles on the car to reset parameters?

TIA guys
steve

 

[lucky phil]

Just go and put 20 miles on it and a few starts and see what happens.
Phil

 

[jmikes]

Like Phil said, drive it for a bit including possibly stopping and shutting it off / turning back on.

Last year when an alignment shop screwed up my steering wheel angle so bad it threw chassis / safety system codes, after I corrected it myself it took a short drive and a park then re-startup to get rid of the codes.

 

[freeform911]

did just that this morning..about 30 miles.. stop and started the car 3-4 times..
lot of weird stuff going on..
chassis stabilizing error
all driver assist inactive ( ex. radars blind spot monitoring)
speedo reads fast by 7mph
odometer increases at rate faster then miles driven..

 

[Thraxbert]

Sounds like low battery.

 

[lucky phil]

Sounds like low battery.

He's already replace the battery but it sure sounds like that
Phil

 

[MrNobody]

Did you have your ECU unplugged for an unlock?

 

[freeform911]

my tuner seems to think it was voltage interruption durning the reflash..
even though i had my battery tender in place the state of my battery was under 80%…

talked to a friend that’s a master tech at bmw.. i’m meeting him in the a.m to plug the car into ista.. hopefully he can delete/clear the permanent codes..

i’ve also read bmw has a warm up start cycle.. between 3-15 warm ups and 200+ miles to be driven..

i’ve put 50-70 miles on my car today just driving around in hopes to correct the codes but nothing yet..
funny thing is my odometer has registered over 200 miles driven today

 

[freeform911]

Did you have your ECU unplugged for an unlock?

my cars been tuned for about 5 years..
the last time i opened mhd was about 4 years ago with the p800 upgrade..
all this because i needed to reflash the tune to update the mhd app

 

[MrNobody]

Did you have your ECU unplugged for an unlock?

my cars been tuned for about 5 years..
the last time i opened mhd was about 4 years ago with the p800 upgrade..
all this because i needed to reflash the tune to update the mhd app

Ah ok. nevermind lol

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