DSC Brake ABS lights plus....

[sckooby94]

Well idk, that issue didn't allow my car to start anymore .. But I mean I'm just shooting out options.. Radio could be another issue

[tomsawyer]

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.

• Possible causes of the fault
  There may be a sporadic fault in the VTG - continuous troubleshooting the VTG
  No sensor signals (e.g. wheel speed from DSC) - check whether sensor fault codes are stored in DSC.
  Rectify fault codes stored in DSC according to tester instructions.

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.

[tomsawyer]

Update -

Earlier today, while driving about 30 to 40mph, same thing happened - truck hesitates and 4x4, brake and ABS lights go on and the radio shuts off and turns back on.

Later in the day, driving same speed, again moment of hesitation but this time only the 4x4 light comes on with the radio shutting off then turning back on.

Tonight, again driving same speed, a moment of hesitation - but now I figured out what the hesitation is. It's the ABS engaging momentarily. Even though my foot is on the gas pedal, it feels like I'm pressing the brake pedal for a second. So what's happening is while my foot is on the gas pedal, traveling 30 to 40 mph, the ABS is kicking in for a moment and when it releases, the 4x4 light, plus the brake & ABS light, and the radio shutting off and then turning back on.

Why the heck would the ABS kick in (or perhaps it's the DSC because the system thinks there's wheel slip?)?

What do you guys think?

[jopecasa]

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

[tomsawyer]

Actually, thus far, everytime it's happened is when the car is in motion - traveling about 30 to 40mph, on a flat surface with a constant throttle. So far, it hasn't happened on the highway, going highway speeds

[David.X5]

I have had the DSC problem without the other effects (radio, etc) when a wheel speed sensor is going bad. The DSC applies the brakes trying to get the four wheels to agree, and when it can't make sense of the response (since it was a bad sensor) it triggers a fault and shuts down.

[mofoaka]

use DIS and clear faults. start from scratch, and read codes again. These might be codes that were stores prior to being read.

Do you hear a clicking when you turn off the car? audible outside of the car under the driver seat. If you hear clicking this would point to actuator gear. also code 5f3a was the same code i got for the actuator gear. I had a lot more codes present also prior to clearing it and rescanning. Once rescanned, only the code 5f3a was present. Do you have EHC2? You may also have SLS inactive message also if you have EHC2.

Change that gear!! it'll solve 80% of your codes! and its only 20 bucks! check out my threads on this.

[David.X5]

I ran out of time, but wanted to add that you have codes for every possible wheel speed sensor. This is implausible. Likely to be transfer case gear screwing things up or DSC module crapping out (look for threads on that). Given the relative cost, and weirdness of your problem, the $20 gear should easily be first and then move to other issues.

[B-M-W]

Charging voltage seems too high.

I would check every wheel sensor individually. Don't just visually check them, but test them individually with either a multimeter or bmw software. With the software it would be a lil easier.

After all your wheel sensors are fine and the problem still persist, then I would start looking for a new DSC module.

[bcredliner]

I agree with earlier posts to clear the codes and see what comes back, unlock the cluster and monitor voltage for spikes and get a battery load test done. Resting and running voltage is in the normal range.

I would keep troubleshooting. I wouldn't be buying parts yet.