05-25-2015, 10:11 AM | #1 |
Private First Class
129
Rep 158
Posts |
Rear axle differential lock error
Anyone else experienced this error code on their F8x? Rear axle differential lock. It happened once at 300km and the dealer replaced the GHAS controller unit and now it happened again at around 15,000km. Dealer did some test and diagnostic and said they have a new differential on order for me now and I will have to wait 3 weeks.
|
05-25-2015, 11:21 AM | #2 |
Lieutenant Colonel
216
Rep 1,793
Posts
Drives: 06' E90 330, 20' F97 X3m
Join Date: Feb 2006
Location: L.I, NY
|
That sucks. Hope they get it sorted out.
__________________
LIVE FAST..DRIVE FASTER!! |
Appreciate
0
|
05-25-2015, 11:38 AM | #3 |
Lieutenant
114
Rep 524
Posts |
it seems like every dealer just replaces the part instead of fixing it. It's like the tesla approach and it's not a good thing.
|
Appreciate
2
G35POPPEDMYCHERRY4992.00 |
05-25-2015, 11:48 AM | #4 |
Lieutenant Colonel
1231
Rep 1,789
Posts
Drives: wife crazy
Join Date: Jul 2014
Location: Phoenix
iTrader: (0)
Garage List 2019 Ford Raptor [0.00]
2016 Porsche 991.1 ... [0.00] 1987 Chevy Camaro I ... [0.00] 1972 Chevy Corvette [0.00] 1999 BMW M3 race car [0.00] |
I hear ya, but on a diff it makes the most sense just to replace it.
__________________
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 |
Appreciate
0
|
05-25-2015, 12:14 PM | #5 |
Lieutenant
168
Rep 507
Posts |
|
Appreciate
0
|
05-25-2015, 01:10 PM | #6 | |
Second Lieutenant
112
Rep 210
Posts |
Quote:
Case in point is the old SMG III transmission in the previous M5/M6. It has a well-deserved reputation for being unreliable and requiring $10k+ replacement/repair bills. However, once the cars started dropping out of warranty in 2010 or so, indie mechanics started doing real troubleshooting on these gearboxes. In the end, it was determined that the vast majority of the issues were with improper lubrication of the clutch release bearing and/or improper hydraulic fluid levels in the SMG pump. Both fixes obviously cost significantly less than replacing the entire unit. |
|
Appreciate
1
chetrickerman10437.50 |
05-25-2015, 01:16 PM | #7 |
Banned
167
Rep 680
Posts |
|
Appreciate
2
|
05-25-2015, 01:31 PM | #8 |
Lieutenant General
3183
Rep 10,509
Posts |
|
Appreciate
2
|
05-25-2015, 01:48 PM | #9 |
Advocatus Douchebagus. Sex Marxist.
2415
Rep 3,415
Posts
Drives: Lucy.
Join Date: May 2012
Location: Canada
|
That stinks.
First I think I've heard of this error so....uhh.....lucky you As for replace instead of repair, while under warranty I prefer a new part to having someone mess around to 'maybe' fix it (or make it worse). Doesn't cost the dealers to get new parts under warranty so why would they take on the liability that their service techs screw it up or make it worse? I think it is inevitable as cars get more complex that warranty repairs will usually be done by replacing. ...and as another noted, after the warranty is done, there are lots of good, dedicated, professional mechanics who can dig and figure out problems a little more.
__________________
Drivin' Lucy
|
Appreciate
0
|
05-25-2015, 04:46 PM | #10 |
Lieutenant Colonel
1683
Rep 1,812
Posts
Drives: 2015 6MT YMB M3, 1974 Corvette
Join Date: Apr 2015
Location: NW Florida
|
I know this may be overstating the obvious but man these cars are complex.
I never got "alerts" like this in my 1971 AMX or 1974 Corvette ragtop and both have the original posi rear diff
__________________
AIRPOWER
|
Appreciate
0
|
05-25-2015, 05:27 PM | #11 |
Large Member
951
Rep 1,749
Posts |
On such a new model, I would imagine they want that unit back to do much more in depth testing on what went wrong to see if this is a bigger problem or a one off issue. If they keep the entire unit, they can take as long as they want to go over just what went wrong and why.
__________________
2008 E92 M3 (Engine swap completed), 2015 F82 M4
|
Appreciate
0
|
05-25-2015, 06:21 PM | #13 |
Second Lieutenant
112
Rep 210
Posts |
Oh, absolutely. I'm not arguing that he shouldn't get a new part. He definitely should since it's still under warranty. My argument was just that people are scared of owning a BMW out of warranty because they look at cost of the in-warranty work at a dealership and assume that that's how much they'd need to pay to fix the issue out of warranty. In reality it's usually far less than that since a good independent mechanic can often diagnose the real issue and minimize repair costs.
|
Appreciate
1
G35POPPEDMYCHERRY4992.00 |
05-25-2015, 09:24 PM | #14 | |
Lieutenant Colonel
306
Rep 1,684
Posts |
Quote:
Initially, the paper chasers implement sensor thresholds that appear valid on paper. But, the real life real time sensor readings can go far beyond the initial spec. This leads to false alarms and nuisance alerts. Only time (and patience) can get all of these issues corrected. That's why it's so important to report any errors. The good news: Once a manufacturer gets through the issues then the resulting parameter adjustments will last for years and the competition still has a lot of catching up. |
|
Appreciate
2
G35POPPEDMYCHERRY4992.00 |
05-25-2015, 09:47 PM | #15 |
Brigadier General
2897
Rep 4,072
Posts |
Its probably a rare part to fail and I would think these being M cars would have more than a few parts that are low production and M specific. Keeping in mind total production and sales I would think the Ms make up a very small percentage. Probably more cost effective to just have the parts on demand from the motherland as needed.
|
Appreciate
0
|
07-20-2015, 12:42 PM | #17 | |
Private First Class
129
Rep 158
Posts |
Quote:
|
|
Appreciate
0
|
07-23-2015, 07:04 PM | #19 |
Lieutenant Colonel
1156
Rep 1,726
Posts |
got my car back...
the master M tech at my local BMW dealership has never seen this fault before. So troubleshooting escalated up to BMW Corporate. the GHAS differential control module was directly interrogated. fault code present. confirmed to be heat related. M tech instructed to check electronic and mechanical connections for signs of heat damage. All visually appear to be undamaged and secure. the control module itself was reinitialized (rebooted). came back on-line as usual, output signals verified, fault codes cleared. Service manager took the car out for a test drive, I assumed he pounded on it pretty good (in mid-day 85 degree temperatures). No issues. so that's it. i asked the service advisor if the fault could happen again in similar track conditions as before. he admitted it's certainly possible, but the service was performed as instructed by BMW corporate. I surmise, if it happens again then a control module replacement or worse, differential replacement would be the next course of action.
__________________
My Trackable Street Car
2016 BMW M4 GTS |
Appreciate
0
|
09-03-2015, 06:19 AM | #20 |
Sameet
739
Rep 2,541
Posts
Drives: AY/B M4 '15
Join Date: Apr 2010
Location: Long Island, New York
|
This just happened this morning on cold start up.. Car shut off on me quickly but after second restart the fault went away and car started normally.
Last edited by sA x sKy; 09-03-2015 at 08:07 AM.. |
Appreciate
0
|
09-03-2015, 06:35 AM | #21 |
Lieutenant Colonel
1156
Rep 1,726
Posts |
Ugh...
Ownership has been less than what was expected. I don't like this lingering worry about whether my car is gonna limp mode / throw codes on a road trip or track day *sigh* 1st world problems....I know. |
Appreciate
0
|
09-03-2015, 08:09 AM | #22 |
Sameet
739
Rep 2,541
Posts
Drives: AY/B M4 '15
Join Date: Apr 2010
Location: Long Island, New York
|
Yeah I just talked with my tech at BMW, and he said this problem has occurred to more than just one person. If it happens again I'll be taking it to the dealer. Just don't want to take off the downpipes and JB4 for this :/
I can understand if the fault came up during a track session but mine was at cold start lol |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|