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Instructions to access the hidden OBC functions:
BMW E46 On-Board Computer (OBC) Hidden Codes:
1 Car Engine and cluster data
2 (test) Cluster System Test - Activates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
4 Momentary Consumption
5 Distance Gone Consumption
6 Fuel Level sensor inputs in liters
7 Temperature and Speed
8 Input value in HEX form
9 Battery
10 Not used
11 Not used
12 Not used
13 GonG Gong Test
14 Not used
15 Status cluster I/O-ports (bit codes) 0=low; 1=high
Status Digital Outputs (bits) 0=inactive, 1=active
16 Not used
17 Not used
18 Not used
19 Lock Status; unlocks functions in range 3-18
20 Not used
21 Software Reset; reset OBC settings
00 End of test
- 1. Hold Trip Reset while turning ignition key to on position
- 2. OBC should show "Test"
- 3. Use Trip Reset to select function 19.0 that unlocks all the features
- 3. Wait for display to show "Off"
- 4. Depress Trip Reset for 1/4 second and release it
- 5. With no delay press Trip Reset several times to select one of the following functions
BMW E46 On-Board Computer (OBC) Hidden Codes:
1 Car Engine and cluster data
- 1.0 46nnn Chassis nr/VIN serial number (last 5 digits)
- 1.1 4nnn K-number
- 1.2 690236 Cluster Part #
- 1.3 045210 Coding (04)/diagnosis (52)/bus index (10)
- 1.4 1200 Week (12)/year of manufacture (2000)
- 1.5 09_160 Hardware (09) and software # (16.0) of cluster
- 1.6 Not used
- 1.7 04__44 CAN-version (04) KI-revision index (44)
2 (test) Cluster System Test - Activates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
- 3.0 1098 Used fuel in liters since last SI (Service Inspection)
- 3.1 0231 Periodic inspection days; elapsed days (since last SI)
4 Momentary Consumption
- 4.0 0145+ Instant fuel consumption - 0145=14.5 liters/100km
- 4.1 0018 Instant fuel consumption - 0018=1.8 l/Hour
5 Distance Gone Consumption
- 5.0 082 Average mileage; 082=8.2 liters/100km
- 5.1 0536 Calc. km to refuel (momentary distance to go)
6 Fuel Level sensor inputs in liters
- 6.0 109330+ Fuel level averaged; Left half sensor input=10.9 liters; Right sensor input=33.0 liters
- 6.1 0439+ Total tank level averaged; vlgs 6.0: 10.9+33.0=43.9 liters
- 6.2 0442+ Indicated value (44.2) and tank phase
7 Temperature and Speed
- 7.0 021+ Coolant/Engine temperature (2.1C)
- 7.1 130 Ambient/Outside temperature - chg met 5 pts. 125/130/135
- 7.2 + Engine speed / Current RPMs 1/min
- 7.3 + Vehicle speed / Current Speed in km/hour
8 Input value in HEX form
- 8.0 1d0+ System voltage ADC-Value Hex code
- 8.1 26C33C+ ADC Values HG left/HG right
- 8.2 0000 ADC Value brake degradation sensor (000=o.k.)
- 8.3 18C ADC Value outside temperature
9 Battery
- 9.0 140 Battery Voltage - 140 = UB 14.0v
- 9.1 242013+?
- 9.2 074_78+?
- 9.3 0011+?
10 Not used
11 Not used
12 Not used
13 GonG Gong Test
14 Not used
15 Status cluster I/O-ports (bit codes) 0=low; 1=high
- 1 belt contact, seat belt fastened=0;
- 2 ignition lock contact, key inserted=0;
- 3 door contact, door open=0;
- 4 clock button pressed=0;
- 5 SI reset=0, for reset=0;
- 6 EGS transmission failure=0
Status Digital Outputs (bits) 0=inactive, 1=active
- 1 Gong output;
- 2 Brake warning lamp;
- 3 Low fuel warning lamp;
- 4 EGA lamp;
- 5 seat belt lamp;
- 6 manipulation dot
16 Not used
17 Not used
18 Not used
19 Lock Status; unlocks functions in range 3-18
- 19.0 L-On/L-Off Unlock: press button when "L-Off"
20 Not used
21 Software Reset; reset OBC settings
00 End of test