[BMdblU]

Hi everyone

Took the car in a few days ago for a new windshield, oil change and they did a recall. I am assuming there did a software update. Was fine for a couple days ..

Today the car is not backfiring or popping on downshifts. Its also not downshifting or holding gears properly even in S3. 2020 M5C.

Called the dealer and he is talking to the shop foreman.

Any thoughts?

[Resjudicata]

Originally Posted by BMdblU

Hi everyone

Took the car in a few days ago for a new windshield, oil change and they did a recall. I am assuming there did a software update. Was fine for a couple days ..

Today the car is not backfiring or popping on downshifts. Its also not downshifting or holding gears properly even in S3. 2020 M5C.

Called the dealer and he is talking to the shop foreman.

Any thoughts?

Yes, this is the new software. bloozemanAZ has a whole thread about it and can tell you all the new problems.

[BMdblU]

Originally Posted by Resjudicata

Yes, this is the new software. bloozemanAZ has a whole thread about it and can tell you all the new problems.

Thanks. DM'd him. Does anyone know if this can be reverted? I cant find the thread

[Resjudicata]

Originally Posted by BMdblU

Thanks. DM'd him. Does anyone know if this can be reverted? I cant find the thread

it can't be fixed without reverting the software back, or an ECU tune with aggressive bubbles effect DME ECU.

[Oswiff]

I thought these were only cars in Europe, not North America

[Padfan9]

Originally Posted by Resjudicata

Yes, this is the new software. bloozemanAZ has a whole thread about it and can tell you all the new problems.

Wth! I just got my 2020 1 month ago, and I hear the popping even after 1200 mile service. Would this update happen on my next service? Does it have to be done? I noticed my navigation acting up today all of a sudden skipping around my Spotify, not sure if it's related to an update required. If I got coding code to have my taillight flash when breaking, no seatbelt chime etc would this update erase that?

[calbears]

Originally Posted by Oswiff

I thought these were only cars in Europe, not North America

2021s are neutered all across the line from M340i to the M5. Even with the M Performance Exhaust, the burbles on the overrun are limited in time/duration and sound.

[pcai]

Oh no BMW, please don't do this to north american cars as well .

[AHall]

Several people received their cars only after the update. They should be able to let us know.

[HokieM4]

I just had my update done today at Sterling BMW and while the cracks and bangs are not completely gone, it's definitely noticeably less pronounced. Especially when downshifting from 3rd to 2nd. I'm going back tomorrow to see if I can get the old version back

[pcai]

Originally Posted by HokieM4

I just had my update done today at Sterling BMW and while the cracks and bangs are not completely gone, it's definitely noticeably less pronounced. Especially when downshifting from 3rd to 2nd. I'm going back tomorrow to see if I can get the old version back

Do u have 2020 model?

[jko2001]

Also in Toronto. I just got a call today about an open recall on my vehicle (2019 M5C) re: Program Control Units (OBD - tank vent valve). Does this description look familiar?

[euro*]

I hear that they also updating cars ECU's with latest software which makes the car way harder to flash tune. And their new system is flagging cars left right and centre right now for tunes....

[AHall]

I heard

tune = voided warranty

[HokieM4]

Originally Posted by pcai

Do u have 2020 model?

2019

[pcai]

Originally Posted by HokieM4

2019

Ah shit, are they really doing this to 2019 models as well? What did u go to the dealer for? Annual oil change or recall? I assume u didnt just go in for a software update. So they just happened to update the software with the other work being done to your car?

[HokieM4]

Originally Posted by pcai

Ah shit, are they really doing this to 2019 models as well? What did u go to the dealer for? Annual oil change or recall? I assume u didnt just go in for a software update. So they just happened to update the software with the other work being done to your car?

I just went in for a state inspection and they said there was a recall. They told me there is also a software update so I went ahead and let them do it but didn't think it was going to impact the sound. Going in tomorrow to get it fixed. I'm sure they can download the old version back

[pcai]

Originally Posted by HokieM4

I just went in for a state inspection and they said there was a recall. They told me there is also a software update so I went ahead and let them do it but didn't think it was going to impact the sound. Going in tomorrow to get it fixed. I'm sure they can download the old version back

Alright definitely keep us posted whether you can get the old software/ECU map back.

[jko2001]

Originally Posted by pcai

Ah shit, are they really doing this to 2019 models as well? What did u go to the dealer for? Annual oil change or recall? I assume u didnt just go in for a software update. So they just happened to update the software with the other work being done to your car?

See my note above re: 2019 model - they called me today to schedule an appointment specifically for this. If it's the same ventilation issue that caused the stop order last month, it sounds like it's not a safety item and is only related to emissions. If that's the case, I'm going to cancel the appointment and let them update it at my next scheduled appointment.

[HokieM4]

Originally Posted by jko2001

Also in Toronto. I just got a call today about an open recall on my vehicle (2019 M5C) re: Program Control Units (OBD - tank vent valve). Does this description look familiar?

Tank Ventilation Recall is what they told me
24175599 24B1 Recall

[bloozemanAZ]

Originally Posted by BMdblU

Hi everyone

Took the car in a few days ago for a new windshield, oil change and they did a recall. I am assuming there did a software update. Was fine for a couple days ..

Today the car is not backfiring or popping on downshifts. Its also not downshifting or holding gears properly even in S3. 2020 M5C.

Called the dealer and he is talking to the shop foreman.

Any thoughts?

Unfortunately, welcome to the exhaust neutering BMW is rolling out here in the US. We've been tracking it closely on the 8-series forum as it apparently hit the M850i first given it's original aggressive exhaust even in Comfort mode. That said the backfire reduction is expected with 2020 iDrive updates but the downshifting and holding gears is a different story that you definitely should pursue with the dealer.

On my 2020 M850i the closest thing I have is Sport Plus mode and generally I drive in Sport Individual (suspension on Comfort, transmission on Sport and engine on Sport Plus). I'll do some pure Sport Plus testing to see if I perceive the same transmission issue as in the early days of COVID-19 I drove exclusively in Sport Plus just to get the bang for the buck when I had the opportunity to drive the car.

[bloozemanAZ]

Originally Posted by pcai

Oh no BMW, please don't do this to north american cars as well .

They are as there are at least 12 states (last time I looked into it) that have exhaust dBA regulations and hence the theory that BMW is doing it across the board to be compliant. We've been tracking this for months on the 8-series forum which absolutely confirms that it is taking place.