I had come across this in Usenet a few years back and dug it up when I recently purchased my 325i. Haven't tried any of them yet, but plan to do so soon. Would be interested in knowing if these work and , if so, can someone fill in the missing pieces.
Sorry if this has been posted elsewhere on the boards.
______________________________
As some of you may know, the BMW On-Board Computer (OBC) holds more
functions than is documented, including a very nice
instrument panel test.
I managed to get a lot of this information from the web, but it was
far from complete.
Subsequently I asked my dealer for the missing info, but they could
not provide the complete list either.
Following is a list for the items I could find, they work in my car
(E46 323i). I gather most of them also work in the E36 models.
Who can tell what the missing entries represent (especially functions
9.1, 9.2 and 9.3 which are very mysterious) ?
Instructions to access the hidden OBC functions:
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 1/2 second and release it
5. With no delay press Trip Reset several times to select one of the
following function s
BMW E46 On-Board Computer (OBC) Hidden Codes
nr example description
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 - Acticates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
3.0 1098 Used fuel in litres 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+ Coolent/Engine temperature (2.1C) koelvloeistof-temp.
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
1st-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
+ constantly varying
? no idea what this means
Sorry if this has been posted elsewhere on the boards.
______________________________
As some of you may know, the BMW On-Board Computer (OBC) holds more
functions than is documented, including a very nice
instrument panel test.
I managed to get a lot of this information from the web, but it was
far from complete.
Subsequently I asked my dealer for the missing info, but they could
not provide the complete list either.
Following is a list for the items I could find, they work in my car
(E46 323i). I gather most of them also work in the E36 models.
Who can tell what the missing entries represent (especially functions
9.1, 9.2 and 9.3 which are very mysterious) ?
Instructions to access the hidden OBC functions:
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 1/2 second and release it
5. With no delay press Trip Reset several times to select one of the
following function s
BMW E46 On-Board Computer (OBC) Hidden Codes
nr example description
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 - Acticates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
3.0 1098 Used fuel in litres 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+ Coolent/Engine temperature (2.1C) koelvloeistof-temp.
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
1st-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
+ constantly varying
? no idea what this means
