An on-board computer is not mandatory in the troika. Many cars don’t have it and installing it yourself is expensive. Some machines have this toy installed, and some will find its functions and capabilities useful. There is no such thing on the author’s troika, and I have never seen it. Information taken from the Internet.
On-board computer functions
(km C miles F)- Button to the left of the LCD - switches between English and metric units. It is useful to switch miles/gallons/Fahrenheit to kilometers/liters/degrees after switching to English (to the right of the LCD is a phototransistor for automatically adjusting the brightness of the board. It cannot be pressed).Top row
- To enter thousands, hundreds, tens and units of a particular parameter, respectively.- Set/Reset. Analogous to the Enter key on simpler computers, it saves the entered data. When pressed in clock mode, the beep symbol lights up/turns off. It will beep about half a minute before the end of each hour (reminds you to turn off the AC/DC and listen to the news to see if it’s time to get out?).
Middle row
- Switches time to date and vice versa to display\\change.A prompt to enter the year appears after you enter the date. Year 2000 works without issue. The data is saved after pressing s/r, and the seconds, although not displayed, are reset to 00.
- Fuel consumption 1 and fuel consumption 2. The countdown starts after pressing s/r. Shows integrated fuel consumption per 100 km. Two registers can be used to track consumption, for example, over the entire distance and any part of it.
- How many kilometers can you still drive with the remaining fuel? When the value is less than 15 km, dashes appear (it’s time to feed). If there is a “+” symbol next to km, there is more fuel in the tank than indicated in km or the tank is full.
- Average speed. The countdown starts after pressing s/r.
-Ambient air temperature. It may not be relevant after parking with a warm engine (the sensor in the front bumper gets hot). Updated as you move. At a temperature of +3C, when the ignition is turned on, a warning (beeping) is issued. This means that at +3C it is theoretically possible for ice to form on overpasses, etc., i.e. a call for caution.
Bottom row
- Counts time 1 and time 2 (similar to flow rate). First in minutes:seconds, then hours:minutes.The maximum value is 99 hours 59 minutes. It's just elapsed time and nothing more. Stops when the ignition is turned off and resumes when it is turned on. The countdown starts after pressing s/r.
In cars equipped with parking heating (park ventilation), sets the heating start and stop times, respectively.
- Expected time of arrival. Works only when data is entered in DIST.
- You can enter the distance to the intended target. It just counts down the km. In this case, based on the traffic dynamics, the arrival time is extrapolated. The countdown starts after pressing s/r.
- Speed limit. If the current speed exceeds the set speed by more than 5 km\\h, the BC blinks and the LED begins to blink. A message is displayed on the board. You can read about the car’s refusal to pick up speed further from I.S. Krylova.
- Immobilizer. Key to radio position, enter a code of 4 (any) digits, press s/r, turn off the ignition. At the same time, tracking of opening the hood, rear seat and removing the radio is activated. If one of the three is not in place, the LED flashes invitingly - you need to check whether everything is closed/inserted into place.
The next time you turn on the ignition, you must enter the code (preferably the same as it was at the beginning) and press s/r. Without this, it is impossible to start the engine, and after the 3rd attempt to start, the alarm goes off.
If there is a display at the bottom of the board (the E34 on 520i and 525td/tds does not), then all information from the bookmaker can be independently reflected on it. It is displayed by sequentially pressing the turn signal switch towards the steering column (there is an arrow and letters - BC).
The display sequence can be programmed.
To do this, press the switch and hold it for 3 seconds. PROG 1 will light up. Press on the BC those buttons whose information is desired on the display. Termination by s/r, in which case the information passes cyclically and it is not necessary to display all of it.
To select between expenses, use the km/miles button. Similarly for two values ZEIT and time/date. If s/r is pressed immediately after the PROG 1 prompt, all data from the BC will be displayed sequentially.
Switching the on-board computer to another language
First - the key is in position 2 - which is immediately before the ignition - well, when the brushes are working, then hold the button that was already said (symmetrical to the mileage reset), hold it for a long time, but not 2 minutes, it should work in about a second . 30. And the language will change, hold it again - it will change again, and so on until there is US English or UK English...VIN in computer and car
On the rear edge of the engine compartment, right below the windshield, almost in the middle, a little to the right. Visible through a gap in the plastic trim, open the hood.You press the check control (symmetrically with respect to the odometer reset on the board on the right), insert the key, turn on the ignition (without starting the engine), start the tests. The VIN only gives the last 7 characters.
On-board computer messages (German-English-Russian)
Bad messages
Bremsflussigkeit - brake fluid level is approaching minimumOeldruck Motor - insufficient oil pressure in the engine. Appears if, after starting, the oiler does not go out for about 5 seconds (I omit cases of the pan being pierced). The manual requires stopping the engine immediately, but if you try to start it right away, it helps. It’s worth thinking about the next “cheaper” oil filter -
Kuhlwassertemp - overheating. Heat on full, turn off the engine.
Handbremse lostn - take off the handbrake, fool!
Kein Bremslicht - no brake light. Rarely do two lamps light up.
Bremsli. Elektrik - the fuse or brake light circuit is covered.
Speed Limit - you have exceeded the specified speed
Not very bad messages
Getriebeprogramm [ХЗ] - the death of an automatic transmission (I can’t go into more detail, I have a manual transmission)Bremsbelage - the pads have worn out and the sensor has tripped. Change both.
Waschwasserstand - insufficient fluid level in the washer reservoir (washer fluids are running out). Top up.
1 Bremslicht - one brake light is covered. We change the light bulb.
Abblendlicht - the low beam is covered. See previous paragraph.
Rucklicht - one of the rear lights does not light up. See previous paragraph.
Kennzeichenlicht - one or both license plate lamps do not light up. See previous paragraph.
Anhangerlicht [ХЗ] - something is not working in the trailer light alarm.
Not very good messages
Oelstandmotor - the engine oil level is approaching a minimum. Top up.Kuhlwasserstand - the coolant level is approaching a minimum. Top up.
Oeldruck Sensor - malfunction of the oil pressure sensor.
Sensor Oelstand - - malfunction of the oil level sensor.
Check Control is an analogue from the Microsoft lexicon: General Protection Fault. Immediately leave the vehicle by ejecting. To start the ejection system, open the hatch and fart hard on the preheated cigarette lighter.
Licht an? - the driver's door is open with the lights on.
Neutral message
Standlicht - high beamNebellicht vorn - front fog lights
Nebellicht hint. [ХЗ] - rear fog lights
Betriebsanleitung read the car manual
Koffenraum Offnen started driving with open trunk
Tur Offnen - movement started with the door open
If + is lit on the board, then the bookmaker is complaining about more than one problem. You can read one by one by pressing Check Control. Note: sometimes, according to BC, all the brake lights, dimensions and license plate lights are covered. It is treated by turning off the ignition and restarting the engine.
Press the 1000 and 10 keys simultaneously. TEST appears on the display. Dial code 19 and press the SET/RES key. You will see LOCK:ON or LOCK:OFF, depending on whether hidden functions are locked or not. If your LOCK:OFF light is on, then you can proceed to the description of the functions, but if not, then you will have to unlock the bookmaker.
To unlock, press the DATE key - you will see the current date, for example 19.12 (day and month). Add them up, in our case 19+12=31, 31 - and there is a code to unlock hidden functions. Using function 19, by entering a code you can block/unblock hidden functions.
All hidden functions are called according to the algorithm described above by simultaneously pressing keys 1000 and 10.
Hidden functions of the BMW on-board computer.
List of functions
- Display test - all indicators on the BC display should light up
- Instant consumption in liters per 100 km
- Instant consumption in liters per hour
- Average consumption in liters per 100 km (used for BC to calculate distance)
- Distance (this function is also available through the BC button)
- Instant fuel level (current position of the fuel level sensor)
- Remaining fuel in the tank (average position of the fuel level sensor)
- Speed km/h
- Voltage in the on-board network (in reality - voltage coming to the BC)
- Speedometer correction
- Setting the language
- Average speed (used by bookmaker to calculate time of arrival)
- estimated time of arrival
- Firmware date
- Diagnostics
- Diagnostics
- Vehicle data
- Sound alarm mode switch
- Blocking additional functions
- Adjusting fuel consumption for BC
- Reset all errors, as well as BC
Procedure for adjusting fuel consumption (Test 20):
This function is provided for adjusting the average BC consumption values. If the BC data differs from the actual consumption data, then the adjustment procedure is as follows:- Fill the tank full, drive it out and fill it again.
- Get the actual consumption by dividing the amount of fuel poured by the mileage.
- Calculate the new adjustment value as the product of the old value and the ratio of the flow rate according to the BC to the real flow rate.
Note: In the text, LCD means liquid crystal display. LCD to LCD
has no relation.
The reverse may not be true;
(km С miles F)- Button to the left of the LCD - switches between English and
metric units.
It is useful to switch miles/gallons/fahrenheit to kilometers/liters/degrees after
transition to English.
(to the right of the phototransistor for automatically adjusting the brightness of the board. Do not press
subject).
Top row:
[ 1000]
To enter thousands, hundreds, tens and units of a particular parameter, respectively.
[s/r] - Set/Reset
Analogous to the Enter key on simpler computers, it saves the entered data.
When pressed in clock mode, the beep symbol lights up/turns off.
It will beep half a minute before the end of each hour (reminds you to
turn off the Tender May group and listen to the news about “isn’t it time for us
Shall we go?) [UHR/DAT] - Switches time to date and vice versa to display \\changes.
A prompt to enter the year will appear after entering the date. The year 2000 works without issue.
The data is saved after pressing s/r, while the seconds pass and are not displayed.
reset to 00.
- Fuel consumption 1 and fuel consumption 2. The report starts after pressing s/r.
Shows the integral over 100 km of travel. Two registers can be
used to track consumption, for example, over the entire distance and any of its
plot.
- How many kilometers can you still drive with the remaining fuel? When value
Less than 15 km, dashes appear (it’s time to feed the car). If there is a + symbol
near km there is more fuel in the tank than indicated in km or a full tank.
- Average speed. The countdown starts after pressing s/r.
[A - TEMP]- Ambient temperature. May not be relevant after
parking with a warm engine (the sensor in the front bumper heats up).
Updated as you move. At a temperature of +3C when the ignition is turned on
a warning is issued (beeping). Means that at +ZS it is theoretically possible
ice formation on overpasses, etc., i.e. a call for caution.
- Counts time 1 and time 2 (similar to flow rate). First in minutes:
seconds, then hours: minutes.
The maximum value is 99 hours 55 minutes. It's just elapsed time and nothing more.
Stops when the ignition is turned off and resumes when it is turned on.
In cars equipped with parking heating (park ventilation) sets the time
starting and stopping heating
- Expected time of arrival. Works only when data is entered in DIST.
- You can enter the distance to the intended target. Just leads the other way
km countdown In this case, the arrival time is extrapolated from the traffic dynamics.
The countdown starts after pressing s/r.
- Speed limit. If the current speed exceeds the set speed by more than 5
km/h, the BC blinks and the LED starts flashing. A message is displayed on the board. About
failure of the car to pick up speed.
Key to radio position, enter a code of 4 (any) digits and
press s/r, turn off the ignition. This activates hood opening detection.
rear seat and removing the radio. If one of the three is not in place, the LED
flashes invitingly - you need to check whether everything is closed/put in place.
The next time you turn on the ignition, you must enter the code (preferably the same one as
which one was at the beginning) and press s/r. Without this it is impossible to start the engine, and after 3-
th startup attempts.
If there is a display at the bottom of the board (there is no display on the E34 on the 520i and on the 525 td/tds), then the entire
information from the bookmaker can be independently reflected on it. Output by
sequentially pressing the turn signal switch to the steering block (there is such an arrow and the letters -BC)
The display sequence can be programmed.
To do this, press the switch and hold it for 3 seconds. PROG1 will light up.
Press on the BC those buttons whose information is desired on the display. Finally
by s/r, in which case the information passes cyclically and it is not necessary to display all of it.
To select between expenses, use the km / miles button. Likewise for two
ZEIT and time/date values. If s/r is pressed immediately after the PROG 1 prompt,
the display will display sequentially all data from the bookmaker.
To another language.
First - the key is in position 2 - which is immediately before the ignition - well, when the brushes are working, then hold the button that we have already said (symmetrically to reset the mileage), hold it for a long time, but not 2 minutes, it should work in about 30 seconds. IMHO. And the language will change, hold it again - it will change again (in focus!!!) ©, and so on until there is US English or UK English...
on the computer and in the car:
On the rear edge of the engine compartment, directly below the windshield, almost in the middle,
a little to the right. You can see a gap in the plastic trim; open the hood.
Press check control (symmetrically with respect to resetting the odometer on the board
on the right), insert the key, turn on the ignition (without starting the engine), perform tests.
VIN gives only the last 7 characters (if the VIN does not match, then your boomer is successful
stolen from some Hans ©)
On-board computer message (German-English-Russian):
If the bookmaker is not yet in English, then there is a translation from German:
Bad messages:
1. Bremsflussikeit - brake fluid level
approaching the minimum (add more)
2. Oeldruck Motor [ ENGINE OIL PRESS] - insufficient oil pressure in
engine Appears if, after starting the engine, the oil can does not go out within 5
seconds (I omit cases with a breakdown of the pan). The manual requires an immediate stop
engine, but if you try to start it right away it helps. Worth thinking about
next oil filter purchased “cheaper”.
3. Kuhlwassertemp- engine overheating. The stove is full,
turn off the engine.
4. Hadbremse lost- take off the handbrake, YOU FOOL!!!
5. Kein Bremslicht [NO BREAK LIGHT]- there is no stop signal. Rarely lamps
They burn two at a time.
6. Bremsli. Elektrik- the fuse or circuit is covered
stop signal.
7. Speed Limit [Speed limit]- you have exceeded the specified speed.
Not very bad messages:
1. Getriebeprogramm [ХЗ]- the death of the automatic transmission (I can’t say more about my manual transmission)
2. Bremsbelage- the pads were worn out and the sensor tripped. Both
change another
3. Waschwasserstand [WASHER FLUID LOW] - insufficient fluid level in
washer reservoir (the magic fluids are running out). Top up.
4. 1 Bremslicht- one brake light was covered. We change the paw.
5. Abblendlicht- the low beam became covered. See other paragraph.
6. Rucklicht- one of the rear lights does not light up.
7. Kennzeichenlicht- one or both license plate lamps do not light up
8. Anhangerlicht [ХЗ]- something does not work in the trailer light alarm.
9. Oelstandmotor- the engine oil level is approaching
minimum. Top up.
10. Kuhlwasserstand- the coolant level is approaching a minimum.
11. Oeldruck Sensor- malfunction of the oil pressure sensor.
12. Sensor Oelstand- malfunction of the oil level sensor.
13. Check Control- analogue from the Microsoft lexicon: General
Protection Fauit. Immediately leave the vehicle by ejecting. For
to launch an Earth-to-Air catapult, open the hatch and fart
to a preheated cigarette lighter.
14. Licht an?- the driver's door is open with the lights on.
Neutral messages:
1. Standlicht- high beam
2. Nebellicht vorn- front fog lights.
3. Nebellicht hint- rear fog lights.
4. Betriebsanleitung- read the instructions for the car.
5. Koffenraum Offnen [TRUNKLID OPEN]- movement started with open
trunk.
6. Tur Offen- Started driving with the door open.
If + is lit on the board, then the bookmaker is complaining about more than one problem. You can read it but in turn by pressing Check Control. Notes: sometimes, according to the bookmaker, all the stops, dimensions and license plate illumination are covered. It is treated by turning off the ignition and restarting the engine.
Press the 1000 and 10 keys simultaneously. TEST appears on the display. Dial code 19 and press S/R key. You will see LOOK:ON or LOOK:OFF, depending on whether hidden functions are disabled or not. If your LOOK:OFF is on, then you can proceed to the fiction described, if not, then you will have to unlock the bookmaker.
To unlock, press the DATE- key and you will see the current date, for example 12/19 (day and month). Add them up, in our case 19+12=31.31 - and there is a code to unlock hidden functions. Using function 19, by entering a code you can block/unblock hidden functions. All functions are called according to the algorithm described above by simultaneously pressing keys 1000 and 10.
Hidden functions of the BMW on-board computer.
List of functions:
1. Display test - all indicators on the BC display should light up
2. Instant consumption in liters per 100 km
3. Instant consumption in liters per hour.
4. Average consumption in liters per 100 km (used for BC to calculate distance)
5. Distance (this function is also available through the BC button)
6. Instant fuel level (current position of the fuel level sensor)
7. Remaining fuel in the tank (average position of the fuel level sensor)
8. Speed km/h
9. Voltage in the on-board network (in reality - the voltage coming to the BC)
10.Setting the BC language.
11.???
12.Average speed (used by bookmaker to calculate arrival time)
13.Estimated time of arrival
14.Date of firmware
15. Diagnostics
16. Diagnostics
17.Vehicle data
18. Sound alarm mode switch
19.Blocking additional functions.
20.Adjustment of fuel consumption for BC
21. Reset all errors, as well as BC
Procedure for adjusting fuel consumption (Test 20): This function is provided for adjusting the average fuel consumption values. If
BC data differs from real consumption data, then the adjustment procedure
as follows:
1. Fill the tank, drive it out and fill it again.
2. Get the actual consumption by dividing the amount of fuel poured by the mileage.
3. Calculate the new adjustment value as the product of the old value by
ratio of flow rate according to BC to real flow rate.
No. Amperage Purpose
1 7.5 A Windshield wiper, instrument connection (combination).
2 7.5A Relay - (switch for low and high beam)
3 7.5A Light signal
4 7.5A Left sidelight
5 10A Right sidelight
6 7.5A Warning flashing, alarm device (apparatus)
7 15A Fog lamp (front)
8 7.5A Fog lamp (rear)
9 15A Signal horn, air conditioning
10 7.5A Left low beam
11 7.5A Right low beam
12 15A Adjustment (installation) of mirrors, taillight
13 7.5A Left high beam
14 7.5A Right high beam
15 7.5A Stop light (brake light)
16 ZOA Heating (glow) during landing
17
18 15A Theft prevention devices
19 ZOA Compressor for glow, heating (supercharger)
20 7.5A Check (control)
21 15A Interior light, trunk illumination, glove box
22 ZOA Glass cleaning device
23 7.5A Fuel pump
25 ZOA Additive for fan (or brake release device)
26 ZOA Ignition
29 7.5A Air conditioning relay, additives for the brake release device, anti-lock system, rear window heating.
30 7.5A Driver's door central locking device
31 7.5A Central locking device for the remaining doors and trunk.
33 7.5A Electronic heat control (heating)
Fuses under the rear seat
41 ZOA Soundproofing
42 ZOA Driver's seat adjustment
43 ZOA Passenger seat adjustment
44 45 ZOA Device for washing and cleaning glass
ZOA Level regulation
46 ZOA Heated rear window.
If you have such an on-board computer (hereinafter referred to as BC) and at some point the horizontal or vertical segments of the indicator began to disappear and in order to view the inscriptions you need to select an observation angle, and in cold weather there is some improvement. The reason for this is a factory defect! Typical for this type of BC released in the 90s. Next, I will tell you how to overcome this problem at home.
The nature of the defect in copper oxide!
The indicator is connected to the main board with a graphite cable; the contact tracks on the board were left unchanged by the manufacturer - ordinary copper! So it oxidized, most likely entered into a chemical reaction with the adhesive composition of the graphite plume.
First, how to remove the BC. This is done quite simply, you pry the BC with your hand through the hole in the upper part of the shelf located under the BC.
Using any thin object, bend the upper part of the shelf away from the BC and at the same time push the lower part of the BC out, then it can be easily removed entirely.
Then feel free to disconnect the connector and take the BC to your home!
Now that the BC is on your table, you need to disassemble it by bending several latches of the case.
If you have a 12V power supply that produces a current of about 0.5A, then you can connect a BC at home.
To do this, you need to apply + 12V to three pins, if you count clockwise the connector contacts from the printed circuit board side, then these are pins 9,10,14, and connect the (-) power supply to pin 11. The first pin is indicated on the board, it is at the top left!
After power is applied, four inscriptions will appear on the indicator in turn: the panel is not connected; see instructions; temperature -37; enter time.
Now to the point (it’s a pity, of course, that I can’t show all the photos, now I don’t want to open the entire BC and break the not very well secured contacts):
You only need to peck off, or rather even tear off the bus, from the side of the printed circuit board!!! So
It’s like the indicator is sputtered with gold, but it doesn’t oxidize.
The busbar must be torn off from the board very carefully so as not to damage its contact in the place
sticking to the screen!!! The main thing is to do everything slowly!
To get to the bus, you need to desolder the contacts on the backlight lamps with suction. Then unscrew the two screws that secure the backlight housing to the board!
When you get to the glass LCD, remember where the filter substrates are located!
The separation angle of the cable must be selected so that the graphite comes off the board and remains
a little on this train.
After this, the printed circuit board must be cleaned at the contact point
tires to a copper shine! I carefully trimmed the shank with scissors, i.e.
cut it by about 3mm, so as to leave the remaining graphite contact undamaged by tearing, the length of the cable allows this to be done, there is no glue left, a clean, undamaged graphite layer about 1mm in length, this is just enough for excellent contact.
Then we put this tire on the contacts and secure it with transparent tape so that the tire does not move to the sides. There is a silicone soft pressure tape on the case; it must be peeled off and re-glued to the edge of the indicator holder case so that it now presses the graphite contacts of the cable to the board!
On the case, in the places where the printed circuit board is centered, there are small guide posts made of plastic, so you need to carefully remove them and install micro-screws instead of them, pre-drill the guide holes!
If the contacts are aligned accurately and the silicone rubber presses them along their entire length, then when you turn on the power you will enjoy a high-quality picture from any viewing angle to the screen!
My refurbished BC has been tested by operation and in frosts of -40 in the North and in the Crimean heat, everything is just super!
If pressing with three screws is not enough, you can use double-sided tape and stick it in the central parts of the indicator clamp:
Good luck with the repair, BMW lovers!
