09-22-2015, 07:43 PM | #90 | |
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IIRC when I was doing my initial research on my problem, I came across some issues with steering angle sensors in the E9X causing "chassis malfunctions".
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 |
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11-12-2015, 05:45 PM | #91 | |
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Took it to drift school and a track day at Willow Springs with no error codes.
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 Last edited by MaynardZed; 11-18-2015 at 08:03 AM.. |
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11-15-2015, 02:13 PM | #92 |
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my car just had the same code showing up.... went for a grocery run and the code showed up, stock tune, 265/305 tire set up , mpe with downpipes.
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11-18-2015, 07:55 AM | #93 |
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OK, so I spoke too soon. Chassis Malfunction code showed up again at Arizona Motorsports Park, third session of the day last Saturday. The good news is that my EDC cable disconnect plan worked just fine. I completed 2 more full sessions with them disconnected and my lap times were consistent.
The M4 is in a sorry state after this most recent track day ("chassis malfunction" warning, wheel shimmy, screaching from rotor shield, clunking from left front strut mount area). I won't have time to take at a good look at for a few weeks, so I just threw it in storage for now. Likely most issues are just normal track day debris / schlag. All that being said, overall the car performed great on the track!
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 |
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11-18-2015, 10:57 AM | #94 | |
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my M3 at the last track session (the differential lock error came on), the instructor said he heard a clunking sound with hard left turns, like when the car loaded up on the suspension in the corner. he thought maybe it was a loose endlink or something. honestly, it wasn't something that was super apparent to me as the driver, perhaps because i was pretty focused on driving during those times. i mentioned it to my SA when i brought it in for the differential lock error. since i picked up the car, i haven't heard anything. granted, i don't corner as hard just street driving, but i hope it doesn't recur.
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11-18-2015, 12:03 PM | #95 |
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Didn't hear the strut clunking until the morning after when it was cold, then it went away by the time I got to my storage unit. It was definitely coming from the front somewhere, not the diff.
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 |
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11-18-2015, 01:08 PM | #96 |
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I can't believe you've been dealing with this for close to a year and it's still not gone away. I'm surprised you aren't more upset than you are. This makes me really consider going with passive instead (also looking to potentially keep the car past 100k miles).
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11-19-2015, 07:51 AM | #97 | |
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I would definitely order the passive suspension if I was doing it over again.
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 |
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01-25-2016, 05:46 PM | #98 | |
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01-28-2016, 09:57 PM | #99 |
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I too just went to get gas and drove away super normal and it gave me "Chassis function restricted" error. But it's not going away.
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01-29-2016, 05:39 AM | #100 |
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Haven't gotten it in awhile, but haven't been driving the M4 much. Yes, I would still stay away from M adaptive if I was ordering again. I like simple, less likely to break.
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 |
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01-29-2016, 06:47 AM | #101 | |
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Thanks for the advice!
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01-29-2016, 08:17 AM | #102 |
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OP, this has been a fascinating read as well as informative. Glad to see you've gotten to a workaround to get to enjoy the car as it was meant to be. You are probably one of the few that really take their cars closer to the limits than most, wish I could say that of myself but I can live vicariously.
As to the M3/4; a MT with passive suspension, IMO keeps this car as close to its roots as possible, fun, simple and predictable,...during these times of public cravings for hi-tech electric self drive & self parking cars, an era of good or bad that we find ourselves in, we are being robbed of driving the "ultimate" experience.
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01-29-2016, 10:20 AM | #103 | |
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Thank you both for saving me $5500 and skipping ZCP. Signal Green stripper it is
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03-30-2016, 09:59 AM | #104 |
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I was turning into the business park where I work and I got the "Chassis function restricted" message. Took it to BMW and they told me they are replacing a shock and its coming from Germany and it will take two weeks. I wonder if there is an updated shock they are replacing it with.
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04-12-2016, 06:55 PM | #105 |
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Same problem today. Happened after just starting car and starting driving in parking lot. Error message went away after turning off car and turning back on. Car is stock, adaptive suspension.
Car never driven aggressively in turning. Don't drive on track and roads here pretty straight. |
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07-01-2016, 09:39 PM | #106 |
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Any updates on a fix?
I was parking my car in my driveway yesterday (spot has a slight incline) and I suddenly got a chassis malfunction message. I was at full clockwise lock pulling in. I started up the car this morning (fingers crossed) and the chassis malfunction warning pops up again. It is for sure in Sport +, and I can still change steering and throttle response. I can also change traction control too. I'm just worried about taking the car to a dealer since I recently got the Hex Tune Flash and I'm lowered on H&R Sports. Any help would be greatly appreciated.
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10-01-2016, 10:09 PM | #108 | |
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Apologies for the OT.. We now resume regularly scheduled programming. |
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10-02-2016, 08:53 AM | #109 | |
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Now to the chassis malfunction. I jiggled the EDC connectors going to the front shocks, then headed out back on track with all the nannies off and suspension in Sport+. (Was raining before that). Didn't see the error again and had 2 decent sessions in an otherwise quite miserable day, weather wise. Drove quite a bit faster as the track was drying out, didn't spare the car at all. I'll still take the car to BMW next week to have them read the computer codes. Will post back on this thread.
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10-07-2016, 11:18 PM | #110 |
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You could try disconnecting the edc cables next time at the track which essentially puts it in sport+ anyway. Will be interested to see what the dealer does. Like I mentioned before, they replaced both front struts and sensors on my car but I suspect they were just throwing parts at it and there was never actually anything ever "broken"?
No error codes on my M4 in quite some time. Haven't been tracking it since I'm busy racing the E36. Stock wheels and PSS back on too, which I wonder if makes a difference?
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Road course laptimes for BMW M4 2015 6MT
WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889 |
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