Dead subwoofer m340

thatg20guy · 01-25-2021, 02:00 PM

Quote:

Originally Posted by biglesias31

The new amp/booster will be arriving in the US within the next week or so. I have several customers waiting for it and I feel terrible because they're brand new M340s.

:

Do you have any information on if a service bulletin will be released? i called my dealer this morning referencing the PUMA number and the new part number, and they said that since it's not a service bulletin, they have to diagnose first, open a claim with BMW, and then order the new replacement amp.

Any idea what I could do to convince them that this is the exact issue and to go through the diagnostic steps listed in the PUMA measure? They had never heard of this issue before.

biglesias31 · 01-25-2021, 04:29 PM

Quote:

Originally Posted by thatg20guy

Quote:

Originally Posted by biglesias31

The new amp/booster will be arriving in the US within the next week or so. I have several customers waiting for it and I feel terrible because they're brand new M340s.

:

Do you have any information on if a service bulletin will be released? i called my dealer this morning referencing the PUMA number and the new part number, and they said that since it's not a service bulletin, they have to diagnose first, open a claim with BMW, and then order the new replacement amp.

Any idea what I could do to convince them that this is the exact issue and to go through the diagnostic steps listed in the PUMA measure? They had never heard of this issue before.

It's in the "Advanced Information" section so it's not technically a bulletin yet. I'll take a pic of it and post it for you guys!

biglesias31 · 01-25-2021, 04:32 PM

Here it is...

thatg20guy · 01-25-2021, 04:34 PM

Quote:

Originally Posted by biglesias31

Here it is...

Awesome - thank you!

Ghost Ritual · 01-26-2021, 10:55 AM

Quote:

Originally Posted by biglesias31

Here it is...

Thank you!

thatg20guy · 01-27-2021, 12:45 PM

So I just came back from my dealership and they scanned the car and found no codes, even stored ones. I gave them the information about the PUMA case with the booster fault code but their response was (understandably) that if they can't find any fault codes in memory, technically there's nothing wrong unless they can reproduce the issue.

Did anyone who got the amp replaced have a fault code that was read by the service techs at the dealership? If not, how did you go about asking them to perform the replacement of the amp?

biglesias31 · 01-27-2021, 01:55 PM

Quote:

Originally Posted by thatg20guy

So I just came back from my dealership and they scanned the car and found no codes, even stored ones. I gave them the information about the PUMA case with the booster fault code but their response was (understandably) that if they can't find any fault codes in memory, technically there's nothing wrong unless they can reproduce the issue.

Did anyone who got the amp replaced have a fault code that was read by the service techs at the dealership? If not, how did you go about asking them to perform the replacement of the amp?

I haven't had any faults for customers that were saying the same things you guys are saying but I was able to verify them while driving the cars into the shop. BMW knows there's a problem with these boosters so why are dealerships so stubborn about replacing them when the issue is clearly there?! I just don't get it...sorry guys.

thatg20guy · 01-27-2021, 04:18 PM

Quote:

Originally Posted by biglesias31

I haven't had any faults for customers that were saying the same things you guys are saying but I was able to verify them while driving the cars into the shop. BMW knows there's a problem with these boosters so why are dealerships so stubborn about replacing them when the issue is clearly there?! I just don't get it...sorry guys.

But you were able to replicate the issue once they had dropped the car off? At least I'm glad mine doesn't happen that often, so I will probably try to hold out until it happens again and drive to the dealership right away...such a hassle!

biglesias31 · 01-27-2021, 05:14 PM

Quote:

Originally Posted by thatg20guy

Quote:

Originally Posted by biglesias31

I haven't had any faults for customers that were saying the same things you guys are saying but I was able to verify them while driving the cars into the shop. BMW knows there's a problem with these boosters so why are dealerships so stubborn about replacing them when the issue is clearly there?! I just don't get it...sorry guys.

But you were able to replicate the issue once they had dropped the car off? At least I'm glad mine doesn't happen that often, so I will probably try to hold out until it happens again and drive to the dealership right away...such a hassle!

Yea, I've had 2 where as soon as I drove the car 50ft, no bass and popping from the speakers.

GURKANVURAL · 02-01-2021, 03:29 AM

I have the same issue. They ordered new amp with a new serial number . I think the mew one is EU made and have this serial number. I will write as soon as it s installed. [IMG][/IMG]

kohlzor · 10-13-2023, 06:17 PM

Old thread but does anyone know how I can test if the amp is actually getting powered? I have no bass and previously it would occasional cut off but come back on after car turned on and off. But now it’s been a month and no bass at all with the HK system. Even tried replacing amp with a newer version but no go. Just want to make sure amp of actually getting power before I start taking the seats out and seeing if the woofer themselves have gone bad.

01-25-2021, 04:32 PM	#25
biglesias31 Enlisted Member 25 Rep 44 Posts Drives: BMW X3 Join Date: Feb 2020 Location: North Jersey iTrader: (0)	Here it is... Attached Images
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01-27-2021, 12:45 PM	#28
thatg20guy Private First Class 70 Rep 173 Posts Drives: 2021 M340i Join Date: Jun 2015 Location: Chicago, IL iTrader: (0) Garage List 2021 BMW M340i xDrive [0.00]	So I just came back from my dealership and they scanned the car and found no codes, even stored ones. I gave them the information about the PUMA case with the booster fault code but their response was (understandably) that if they can't find any fault codes in memory, technically there's nothing wrong unless they can reproduce the issue. Did anyone who got the amp replaced have a fault code that was read by the service techs at the dealership? If not, how did you go about asking them to perform the replacement of the amp? __________________ Current - 2021 G20 M340i xDrive - Saphira Retired - 2015 F30 328i - Celine
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02-01-2021, 03:29 AM	#32
GURKANVURAL New Member 2 Rep 5 Posts Drives: BMW G20 2020 320I Join Date: Jan 2021 Location: TURKEY iTrader: (0)	I have the same issue. They ordered new amp with a new serial number . I think the mew one is EU made and have this serial number. I will write as soon as it s installed. [IMG][/IMG] Attached Images
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10-13-2023, 06:17 PM	#33
kohlzor Private First Class 47 Rep 178 Posts Drives: 2017 M240xi Join Date: Feb 2015 Location: Boston iTrader: (0)	Old thread but does anyone know how I can test if the amp is actually getting powered? I have no bass and previously it would occasional cut off but come back on after car turned on and off. But now it’s been a month and no bass at all with the HK system. Even tried replacing amp with a newer version but no go. Just want to make sure amp of actually getting power before I start taking the seats out and seeing if the woofer themselves have gone bad.
	Appreciate 0 Quote