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#1
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DSC Brake ABS lights plus....
- 6 weeks ago, I'm driving along about 35 mph on a flat road and all of a sudden the truck momentarily hesitates for a split second and simultaneously the 4x4, BRAKE & ABS lights come on and at the same time the radio shuts off, screen goes dark and then the radio turns on by itself. I return home, shut off truck, restart a couple of hours later and everything is normal (no lights or warnings) and it stays that way until last week. - last week, I'm driving the same way, about 35 to 45 mph, truck hesitates momentarily (I'm talking like for literally a split second) and again the 4x4, BRAKE and ABS lights turn on and radio shuts off and turns back on about 5 seconds later. I turn off car, restart and lights still there. Truck seems to drive normally. Next day, start truck - all lights gone. - a couple of days ago, again I'm driving and this time only the 4x4 light comes on and this time the radio happened to be off but the navi screen turned black and then came back on. Also, this time, in the orange letters underneath the odometer, a warning comes up says "DSC/4X4 Inactive". I had a guy who's a former BMW tech run a diagnostic (supposedly he has the bmw software, and he pulled the following codes. *002A1D *0029DD *0051AD *004F7A *0000BD *005F3A *005DDO *005F02 *005E52 *005E28 *005E44 *53FC I realize there's a lot of codes and there's the usual posts about the 4X4, Brake & ABS lights coming up but I haven't found a post about the radio shutting down and restarting but itself. Anyone have a clue as to what may be going on? Thanks to all who answer. |
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#2
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Did you have a "generator fault code?"
Check either alternator or battery. My understanding is this due to a spike or power surge in one of your accessories. |
#3
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Your codes are very similar to the post below - I don't have a way to convert them all to the traditional BMW p-codes. The plastic transfer case actuator gear can be bought separately and replaced for $20 or so. I have an earlier version without xDrive, so can't offer any personal experience, but people report a clicking noise from under the car when you turn it off if the transfer case actuator is shot (it will be that $20 gear). There are youtube videos showing how to replace it and showing what it sounds like. X3 have the same problem.
http://www.xoutpost.com/bmw-sav-foru...-inactive.html https://www.youtube.com/watch?v=3xEJbpVupuw p.s. The radio can just be coincidential, or a wire is loose and the vibration of the DSC quiting is causing it to glitch. I would focus on the known issue and work on the radio second.
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David.X5 2001 X5 4.4i Sport SOLD! at 160k miles |
#4
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Thanks guys for answering.
I don't hear the clicking noise underneath the car so for the moment I don't think, at the moment, its the gear. My guy thinks its the DSC Module but like many of the posts have indicated, it always turned out to be something else like a wheel sensor, alternator, etc. instead of the DSC module. Apparently he didn't get any alternator codes but I'm not sure if he ran a battery test or the diagnostic he ran automatically checks the alternator. Not sure how to proceed. |
#5
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My suggestion:
Get yourself a PA soft 1.4 - diagnostic software and follow the steps on how to troubleshoot and look-up errors causing abnormal behaviour of your X5. Check out this link if you want to learn the ABCs. PA Soft 1.4 for Dummies It's very user friendly. |
#6
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The gear on the TC actuator is $20. You can test it by reversing it and see if it behaves (that will engage an unworn section). I would do that before throwing more expensive parts at it.
As Trader4 pointed out, multiple electrical problems can be a symptom of low voltage. Definitely put a volt meter on it (or unlock the cluster and use the built in voltmeter) and make sure you have 12.6V (or close) before starting it, and 13.7V (or so) with the engine running.
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David.X5 2001 X5 4.4i Sport SOLD! at 160k miles |
#7
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Unlock the OBC and see what your voltage is when the car is running, I bet you have over or under voltage and your Vreg on your alternator is taking a dump, IF you arent getting the actuator click.
Oh and btw your buddy with the BMW software would do you a friggin solid if he didnt just give you code numbers but the actual explanations of the errors and descriptions of each code which is visible in the scan he does with DIS. Posting a bunch of numbers to us doesnt really show much at all, I have DIS software and don't even know them.
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2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards |
#8
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Ricky, I do have the print out for the codes and will post as soon as I get a chance.
In the meantime, I went to Advanced Auto Parts to get the battery/alternator test and here are the results: Tested at battery - Car off Voltage - 12.64 Measured - 890CCA Rated - 720CCA Temp - 95 degrees Starter Test: Cranking Normal Voltage - 11.99 Amps - 82.3 Time - 6s Charging System Test: No Load 14.31V 19.4A Loaded 14.13V 12.0A Ripple 23mV At this point, I asked the guy to do the same test only this time, not on the battery, but in the engine compartment. I'm sure I read a post somewhere that someone's X5 got different results in the 2 places. Tested in Engine Compartment - Jump start post Battery Test Voltage - 14.38 Measured - came up blank on print out Rated - 720CCA Temp - 150 degrees Starter Test He bypassed it for some reason Charging System Test No Load 14.44V No amp reading Loaded 14.31V no amp reading Now, on the print out, it shows excessive ripple - 399mV. The guy said that perhaps because the negative was terminal from the diagnostic tool didn't seem to have a good grip on the strut tower bolt, that perhaps the reading is coming from the vibration of the engine shaking the negative terminal. What do you guys think of the reading? Also, if memory serves me correct, I changed the battery in March of 2013 with a BMW original battery. Again, thanks to all who answer. |
#9
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Here's all the codes descriptions per the codes listed in the original post -
002A1D -DME - Tank Fill Level; plausibility 0029AD - DME - Poor road surface detection 0051AD - No message, receiver EGS, transmitter DSC 004F7A - EGS: Signal from transfer box faulty 0053FC - VTG - Supply, control unit: terminal 30 0000BD - IKE - Electronic braking force distribution 005F3A - DSC - Transfer Case ; Malfunction 005DD0 - DSC: Control Unit, overvoltage 005F02 - DSC; Wheel-speed sensor, general 005E52 - DSC; Wheel-speed sensor, EMC front right 005E28 - DSC; Wheel-speed sensor, EMC front left 005E44 - DSC; Wheel-speed sensor, EMC right rear Also, on one of the pages of the diagnostic, it says - DIS Test Schedule DSC - 5E44 DSC: Wheel-speed sensor, EMC, rear right - Fault not currently present DSC - 5E28 DSC: Wheel-speed sensor, EMC, rear right - Fault not currently present DSC - 5E52 DSC: Wheel-speed sensor, EMC, rear right - Fault not currently present DSC - 5E02 DSC: Wheel-speed sensor, EMC, rear right - Fault not currently present Wheel speed sensors - B3450_E60RADS VTG - 53FC VTG: Supply, control unit: terminal 30 - Value too high - fault currently not present - fault would not cause (then paper cuts off) VTG control unit, supply B2710_VGVERS DSC - 5DD0 DSC: Control unit overvoltage - fault currently not present DSC supply B3450_E83VERS DSC - 5F3A DSC: Transfer case : Malfunction - fault currently not present AWD control B3450_E83_VTG Then on the last page there's some text - B3450_E83_VTG / Fault 601 This fault code is stored in the DSC when the VTG signals a fault.
DIAGCODE: D3450_DSC0000B_90_903 That's all the info I have from the print out. Please let me know what you guys think? Thanks to all who answer. |
#10
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I think.....
Did this happen when you're about to accelerate hard from stand still and at the same time you're air suspension is lowering/raising itself? This is the reason. 005DD0 - DSC: Control Unit, overvoltage Last edited by jopecasa; 09-02-2015 at 04:52 PM. |
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