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Technical Topics Suspension / Chassis / Brakes Adaptive suspension and speed bumps

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      03-22-2020, 07:25 AM   #23
TheRetroGuy
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Is everyone that's noticing the problem in an M340 and not a 330? Sorry if you already posted but it's hard to discern differences between car models if it's not listed under the username.

Just wondering if the extra weight of the M340 could be a contributor?
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      03-22-2020, 09:33 AM   #24
blepper
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Quote:
Originally Posted by TheRetroGuy View Post
Is everyone that's noticing the problem in an M340 and not a 330? Sorry if you already posted but it's hard to discern differences between car models if it's not listed under the username.

Just wondering if the extra weight of the M340 could be a contributor?
For me 330i m with adaptive suspension.
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      03-22-2020, 04:04 PM   #25
projekt7
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2020 M340i xDrive here

Adaptive suspension
19" wheels w/ Michelin PS4S
Software version 03.2020.30

Haven't been to the dealer yet (for obvious reasons). The suspension behaves completely fine in all other situations, so I can wait.
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      03-23-2020, 06:07 AM   #26
Denis93
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Quote:
Originally Posted by projekt7 View Post
2020 M340i xDrive here

Adaptive suspension
19" wheels w/ Michelin PS4S
Software version 03.2020.30
As far as I understand this is software version of your iDrive and it does not reflect version of firmware in the control blocks.
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      03-23-2020, 12:45 PM   #27
projekt7
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Quote:
Originally Posted by Denis93 View Post
As far as I understand this is software version of your iDrive and it does not reflect version of firmware in the control blocks.
You're probably right. I don't have access to the details of my suspension firmware though. Just sharing the specs of my car for comparison purposes.
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      03-23-2020, 02:29 PM   #28
blepper
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Quote:
Originally Posted by projekt7 View Post
Quote:
Originally Posted by Denis93 View Post
As far as I understand this is software version of your iDrive and it does not reflect version of firmware in the control blocks.
You're probably right. I don't have access to the details of my suspension firmware though. Just sharing the specs of my car for comparison purposes.
Where can we find that FW version of the suspension?
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      03-31-2020, 12:41 PM   #29
dmi2
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I have the same problem with the "clunk" on my 330i when going over speed bumps at ~20 km/h or faster, under 20 km/h no problem. I have booked appointment at the dealer next week to ride togheter with an technican. Let's hope they can find and fix the problem.
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      04-01-2020, 01:57 PM   #30
blepper
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Quote:
Originally Posted by dmi2 View Post
I have the same problem with the "clunk" on my 330i when going over speed bumps at ~20 km/h or faster, under 20 km/h no problem. I have booked appointment at the dealer next week to ride togheter with an technican. Let's hope they can find and fix the problem.
Keep us informed
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      04-16-2020, 01:47 PM   #31
dmi2
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Quote:
Originally Posted by blepper View Post
Keep us informed
It's solved!

I went to the dealer and ride togher with an technican, unfortunately we had trouble finding a "perfect" speed bump to test on. We drove around for 15 minutes on diffrent type of bumpy roads, but it was hard to re-create the clunk sound. So he didn't think it was any problem with the car or suspension and this was normal behavior. However he told me that my car needed 3 major ECU(?) updates and one of the updates was for driving assistane or something like that, the other two updates didn't he have any information about. So I let them update the car, took around 3-4 hours. When I finally drove away, I tested the "perfect" speed bump near my house and no "clunk" sound! Drove past it several times to make sure, and in higher speed, no problem, just simple smooth suspenion!

The software of my iDrive was 07.2018 before the update, now it's 03.2020. But as someone said ealier in this thread, the FW for the ECU/control blocks are something else.

Last edited by dmi2; 04-16-2020 at 03:00 PM..
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      04-16-2020, 02:26 PM   #32
blepper
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Quote:
Originally Posted by dmi2 View Post
Quote:
Originally Posted by blepper View Post
Keep us informed
It's solved!

I went to the dealer and ride togher with an technican, unfortunately we had trouble finding a "perfect" speed bump to test on. We drove around for 15 minutes on diffrent type of bumpy roads, but it was hard to re-create the clunk sound. So he didn't think it was any problem with the car or suspension and this was normal behavior for the car. However if told me that my car needed 3 major ECU(?) updates and one of the updates was for driving assistane or something like that, the other two updates didn't he have any information about. So I let them update the car, took around 3-4 hours. When I finally drove away, I tested the "perfect" speed bump near my house and no "clunk" sound! Drove past it several times to make sure, and in higher speed, no problem, just simple smooth suspenion!

The software of my iDrive was 07.2018 before the update, now it's 03.2020. But as someone said ealier in this thread, the FW for the ECU/control blocks are something else.
I supose It was not only the sound, also a feelings?
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      04-16-2020, 03:09 PM   #33
dmi2
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Quote:
Originally Posted by blepper View Post
I supose It was not only the sound, also a feelings?

Yes, I also felt a shock/bump. I only had problem over short and taller speed bumps, not the wide.
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      04-23-2020, 01:14 PM   #34
blepper
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Quote:
Originally Posted by dmi2 View Post
Quote:
Originally Posted by blepper View Post
I supose It was not only the sound, also a feelings?

Yes, I also felt a shock/bump. I only had problem over short and taller speed bumps, not the wide.
looks like issue is almost gone (feel something but is more normale.) After sw update.

Only apps are gone maybe they come later back. Apps like wether etc
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      04-24-2020, 01:34 PM   #35
blepper
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Quote:
Originally Posted by blepper View Post
Quote:
Originally Posted by dmi2 View Post
Quote:
Originally Posted by blepper View Post
I supose It was not only the sound, also a feelings?

Yes, I also felt a shock/bump. I only had problem over short and taller speed bumps, not the wide.
looks like issue is almost gone (feel something but is more normale.) After sw update.

Only apps are gone maybe they come later back. Apps like wether etc
Apps are also back after reset. Get also the new maps 🤣
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      06-02-2020, 07:59 AM   #36
Denis93
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Today I finally updated software (07.2019->03.2020).
Difference is huge! Now it looks like dumpers work as they should.
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      06-09-2020, 08:00 AM   #37
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I can't understand half the posts in this thread.
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