arpkt

I have a 530i manual, bought 12/04 in USA.

Over the last months I have been noticing engine hold back around
4000 RPM in the second/third gear. The engine seems to temporary
loose power, and the car jerks - sometimes violently. Passengers
can definately notice. The problem appears both when the cars accelerates,
and if I keep it steady at 4000-5000 RPM.
At 5000 RPM the problem goes away, and the acceleration rate
increases subtantially (it's like pushing a turbo button

Took it to the dealer twice, and they claim it needs a software
upgrade , that will only be available on CIP 20.

I cannot possibly believe that all manual 530s experience
the same problem.

Any similar experience ?

BTW, the second time they upgraded the software, and after
that, No warning screen anymore

znod

It could be a software-update problem. It doesn't seem right, but, fortunately, not all cars of a given model or even build month, for example, necessarily encounter exactly the same software problems. For one thing, one can simply get a bad software installation. I would have them install whatever CIP version they have in your car--although there are reasons one might want to avoid 19.02.

Chorethorious

It could be a software-update problem. It doesn't seem right, but, fortunately, not all cars of a given model or even build month, for example, necessarily encounter exactly the same software problems. For one thing, one can simply get a bad software installation. I would have them install whatever CIP version they have in your car--although there are reasons one might want to avoid 19.02.
[/quote]

DonV,

Have you had your dealer install a new CIP without "needing it?"

alpineweiss

This should be what you're looking for. Hope it helps!

Service Measure
Engine Electrical B12 209 05 04/06/2005
Subject
M54B30 MS45.1; Engine Power Drops at 4000 RPM

Vehicle
E46, E60 with M54B30 and manual transmission.

Complaint
Customer may complain of an engine power drop at approximately 4000 rpm during aggressive acceleration.

Cause
Ignition timing retardation due to unfavorable tolerances of DISA valve flap shaft. Vibrations of a DISA valve are interpreted by the knock sensor system as detonation combustion.

Measure
On a customer complaint basis, replace DISA valve with the improved part (PN 11 61 7 544 805).
After DISA replacement, connect vehicle to DIS/GT1 and from DME identification page retrieve the programmed and basic DME part numbers.
Reprogram DME with the latest available DTS CD! SSS CIP software version. DME programming should last for at least 20 minutes and should result in both programmed and basic control unit number changes. Reprogramming of DME clears the long-term knock sensors adaptations. If the knock adaptation values are not cleared, the vehicle will still exhibit the power lack complaint, even with the improved DISA valve installed.

Important:
In the event the DME programming takes only a short period of time (approximately 5 minutes), and the basic control unit part number has not been changed, the adaptation clearing process has not been accomplished.

In such a case, contact Technical Hotline ? Drive train via a PuMA case, requesting authorization for DME shipment to Engineering Department for reprogramming. For the PuMA case title use the following: MS45.1 DME KNOCK ADAPTATION RESET?.

znod

DonV,

Have you had your dealer install a new CIP without "needing it?"
[/quote]
No I haven't. I won't do so voluntarily unless a new one promises something new that would be significant to me or promises to remedy some significant problem I am having without messing other important things up worse. I say don't fix it if not broken, keep it simple, and watch out for the cure being worse than the disease. I advised the poster to have a reinstall or an update because he may have had a bad factory install, the problem might be cured with a reinstall or an update, and the problem would be significant to me.

Chorethorious

DonV that is advice to live by. I was just curious because I have seen so many post that they talked to their SA and expressed a want for the new CIP install. The thing that kills me is that some actually get it without hassle from the stealership. After seeing a few of these posts and happen to be going to the stealership the next day. I asked if it was possible for, say myself, to request it. It was totally out of the question is the response I received. Which I believe is the correct one. Anyway, I am going to stop rambling now.....

arpkt

Alpineweiss,

Thanks,

I did find this in the forums, and gave it to the dealer. They insist that the
above is not the problem, and they need a new software upgrade CIP 20.

Something about having a PuMA out with BMWNA ..

I guess, I will have to wait and see.