Hit a Curb HARD! Got a Chassis Warning!!!

Arash007ir · 06-04-2017, 08:35 PM

Hit a curb today pretty damn hard, probably doing 30 mph

Both front and rear passenger side wheels are damaged, but the front received pretty much all of it. An hour later got a chassis warning on the dash. I also noticed the gear indicator on speedo indicating manual/sport mode when I hit the curb having the lever in auto mode, but it went away when I switched between auto and manual mode.

It drives seemingly fine, doesn't pull, or make any weird noises, and the steering wheel doesn't seem to be off. The tire hasn't lost any air either.

I'm going to take it to the dealership tomorrow, what should I have them look at?

anotheran · 06-04-2017, 10:04 PM

Check for suspension damage on passenger side and get a wheel alignment done

WickedE93 · 06-07-2017, 05:03 PM

Quote:

Originally Posted by Arash007ir

Hit a curb today pretty damn hard, probably doing 30 mph

Both front and rear passenger side wheels are damaged, but the front received pretty much all of it. An hour later got a chassis warning on the dash. I also noticed the gear indicator on speedo indicating manual/sport mode when I hit the curb having the lever in auto mode, but it went away when I switched between auto and manual mode.

It drives seemingly fine, doesn't pull, or make any weird noises, and the steering wheel doesn't seem to be off. The tire hasn't lost any air either.

I'm going to take it to the dealership tomorrow, what should I have them look at?

That must have been one fine chick you were looking at!

bimmer456 · 06-07-2017, 05:12 PM

Seems they have sensors for everything in these bimmers. I've curbed my rims a couple of times and had the alignment done when my car was brought in for scheduled maintenance but never got a chassis warning after curbing the rims, though I didn't hit it that hard. I did get a report in the mail showing what adjustments they did to the alignment.

Arash007ir · 06-18-2017, 08:14 PM

I took the car to the dealership the next day. According to the service advisor low battery voltage was causing the chassis malfunction.

I did ask him to check the right front suspension for damage several times and he said they've checked and everything's fine. Reading the service report, there's nothing to indicate that they've checked for suspension damage.

Picked up the car, had it checked again for suspension damage at a different shop just to be sure. They didn't find any damage.

I'm not quite sure that the low battery voltage was causing the chassis malfunction as it happened immediately after the impact. Apparently sometimes a connector comes loose during a hard impact causing a short and resulting a chassis malfunction warning, according to the people of the internet.

The car doesn't pull but I think I'm getting a faint vibration at higher speeds. I may need to balance that wheel again as I may have left some bits and pieces of it on that curb.

Here is the dealership report:

06-04-2017, 08:35 PM	#1
Arash007ir Enlisted Member 20 Rep 42 Posts Drives: 435i Sport Join Date: Nov 2013 Location: Chicago iTrader: (0)	Hit a Curb HARD! Got a Chassis Warning!!! Hit a curb today pretty damn hard, probably doing 30 mph Both front and rear passenger side wheels are damaged, but the front received pretty much all of it. An hour later got a chassis warning on the dash. I also noticed the gear indicator on speedo indicating manual/sport mode when I hit the curb having the lever in auto mode, but it went away when I switched between auto and manual mode. It drives seemingly fine, doesn't pull, or make any weird noises, and the steering wheel doesn't seem to be off. The tire hasn't lost any air either. I'm going to take it to the dealership tomorrow, what should I have them look at?
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06-04-2017, 10:04 PM	#2
anotheran Sedan Driver 389 Rep 1,018 Posts Drives: A nice car Join Date: May 2016 Location: Canada iTrader: (0)	Check for suspension damage on passenger side and get a wheel alignment done __________________ Slapping on M Performance parts, ZHP, badges, and stickers does not ///M car make ZCP \| ZHP \| ZTR \| ZE0 \| MSport \| ZMP \| DHP \| MStickerPack \| THP \| MPPSK \| MPPK BMW MSP Lightweight Jacket \| DTM Motorsport Team Cap\| BMW M Drift Cat 5 \| BMW M Thermo Mug
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06-07-2017, 05:12 PM	#4
bimmer456 Major General 2960 Rep 5,993 Posts Drives: 340i Join Date: Nov 2016 Location: Pasadena, CA iTrader: (0)	Seems they have sensors for everything in these bimmers. I've curbed my rims a couple of times and had the alignment done when my car was brought in for scheduled maintenance but never got a chassis warning after curbing the rims, though I didn't hit it that hard. I did get a report in the mail showing what adjustments they did to the alignment.
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06-18-2017, 08:14 PM	#5
Arash007ir Enlisted Member 20 Rep 42 Posts Drives: 435i Sport Join Date: Nov 2013 Location: Chicago iTrader: (0)	I took the car to the dealership the next day. According to the service advisor low battery voltage was causing the chassis malfunction. I did ask him to check the right front suspension for damage several times and he said they've checked and everything's fine. Reading the service report, there's nothing to indicate that they've checked for suspension damage. Picked up the car, had it checked again for suspension damage at a different shop just to be sure. They didn't find any damage. I'm not quite sure that the low battery voltage was causing the chassis malfunction as it happened immediately after the impact. Apparently sometimes a connector comes loose during a hard impact causing a short and resulting a chassis malfunction warning, according to the people of the internet. The car doesn't pull but I think I'm getting a faint vibration at higher speeds. I may need to balance that wheel again as I may have left some bits and pieces of it on that curb. Here is the dealership report:
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