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[florinulbmw]

Obtaining secrets from the Check Control (E38)

 

The Check Control in the instrument cluster of the current BMW 5/7series hides some secrets. Here is the procedure how to unveil them and how to unlock the system to get access to all tests:

 

Turn ignition to pos. II

Push right button in the instrument cluster and keep it pushed. You will first see "Check Control OK", some seconds later you will see "Test Nr.01"

Push the left button on the instrument cluster to see the car's identification number. Add the 5 digits together and write down that number, you will need it for unlocking all the functions. Example: DG23278 will lead to 2+3+2+7+8 = 22

Push the right button until you see "Test Nr.19"

Push left button until you see the number that is equal to the one you calculated above

Push right button again

 

Now you will have unrestricted access to Test No.3-21. If you made an error in the procedure mentioned above, Test No.3-21 will only display Lock:ON

 

Most of the tests are self-explanatory:

 

1 Display Car's identification number, HW/SW version, construction date

2 A very beautiful instrument test

3 Current consumption (liters/hour)

4 Average consumption (liters/100 km)

5 Current range

6 I think this is remaining fuel in tank. Three sets of numbers: A/B/C. And I've noticed A+B=C.

7 Engine RPM / Coolant Temp ©

8 Current Speed (kph)

9 System voltage at Term. "R" (Battery Voltage)

10 Country/Language (US, Spa, Ger, Jap, etc.)

11 Units am/pm

12 Average Speed

13 ETA

14 Date of Software Mask

15 Production Diagnosis

16 ""

17 Display Vehicle Specific Data

18 Alarm Changeover (cont. vs. intermittent OBC chime)

19 Lock/Unlock

20 Correction factor for fuel consumption (nicht ändern!)

21 Reset all defect codes

 

Several numbers and data

[Dispay Test]

VBR: x,x (liters/hr)

RW-VBR: x,x (liters/100 km)

RW: x (km)

Tliters)

TMTL: x,x (liters) / KTMP C

V: x (kph)

UB: xx,xx (V)

LAND: 2=USA, 3=I, 4=E, 5=J, 6=F, 7=CDN, 8=AUS/GOLF, 0=D, 1=GB

EINHEIT 1: B3, B4, B5, B6, B7, B8, B9, BA, BB, BC, BD, BE, BF, B0, B1 EINHEIT 2: [similar to above, I didn't want to mess with it]

VANK: xx,x (kph)

ANKxx

ROM:

DIAG: 01 01 000 E3

PORT: 01 101010000, 02 101010000, 03...etc

PROM: 00 12, 01 37, 02 18, 03 E6, 04 02, 05 B3, 06 FF, 07 7E

HORN: DTON or [DTON flashing]

LOCK: ON

KVBR: 1000

RESET?

 

 

 

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