BMW Forums : BimmerForums banner

E36 obc secret menus and manual

Tags
menus
24K views 8 replies 4 participants last post by  Ferret 
#1 ·
The 5th generation on-board computer (BC V) in the E36 is used to display the time, date, driver information as well as error messages and level data for service products.

Functions, in which digits can be entered, can be controlled via the 4-digit input keys "1000", "100", "10" and "1". By pressing one of the digit keys once in an input function, the corresponding digit in the display is incremented by one.

If a digit key is depressed for longer than 0.75 seconds, the corresponding digit is incremented automatically every 0.5 seconds. Normally, the digits run from 1 to 9 and then start at 0 once again.

In some of the functions, the digit position setting is abbreviated or the digit key "1000" has no function.

If not otherwise specified, the unit of the selected function flashes during entry until the entry is completed. Entries are completed with the "SET/RES" key.

A further function of the "CHECK" key is blanking the 2-segment display or highlighting CC displays already acknowledged or the "CHECK CONTROL OK" display. A display test is performed if there are no check-control faults and the "CHECK" key is pressed for at least 10 seconds. The test appears immediately after pressing the "CHECK" key in ignition switch position 1 or when no check-control is coded in the BC V.

An hour signal and/or any arbitrary reminder time can be programmed or checked with the "MEMO" key:
After pressing the "MEMO" for 3 seconds enter "MEMO" appears in the large display, ":00" appears in the small display.
After entering any time (minutes) with the digit keys "1" and "10" and acknowledging with the "SET/RES" key, the hour signal then sounds 15 seconds before each full hour plus the set time in minutes.
Gong time = Full hour plus input time in minutes minus 15 seconds.

The outside temperature can be monitored with the "A-TEMP" key; at outside temperature from 3 degrees Celsius and below, the driver is warned by a gong signal.

Two different average consumption values can be called up by the "CON-SUM" key and can be reset with the "SET/RES" key.
An average vehicle speed can be monitored at any freely selectable interval by way of the average speed ("SPEED") function.

With the "RANGE" key, it is possible to check the expected range based on the amount of fuel consumed and the tank content.

With the "DISTANCE" key, the expected time of arrival and the distance to the destination is displayed in the text line. The displayed time of arrival is based on the entered distance to the destination and the average speed traveled.

With the "LIMIT" function it is possible to enter a speed value, at which an audible and visual warning is given when exceeded.

Depending on the outer circuit, the "TIMER" function performs various functions. If the "TIMER" output is connected to a relay, two switching points for independent ventilation/heating can be programmed with the "TIMER" key. On the other hand, if the output is not connected, the "TIMER" can be used as a stopwatch function.

A 4-digit number can be entered with the "CODE" key in ignition switch position 1. The engine hood and radio contact is monitored when the vehicle is parked with CODE armed. The engine cannot be started until the same code number is entered again in the BC to disarm the system. Depending on the selected function, the small display shows either the date or the time. Date and time can be displayed for 8 seconds by pressing the key in ignition lock position "0".

In some functions, the unit can be switched over to suit country requirements with the "km/mis" key.

Keyboard:
The keyboard consists of 12 function keys, one check-control acknowledgment key (CHECK), one unit changeover key (km/mis), 4 digit entry keys and one input key (SET/RES). The key labeling is illuminated as of parking light position.
An LED is integrated in the keys "LIMIT", "TIMER" and "CODE" to indicate the status of several functions.
Steering Column Switch:
Functions can be shown in the display also by means of the steering column switch. A new function appears in the display every time the steering column switch is depressed. The following displays cannot be called up via the steering column switch:

Clock
Date
Timer
CODE
MEMO

The items of information are "scrolled through" when the steering column switch (LSS) is depressed. When the "scroll" has been run through once, the first item of information appears once again the next time the steering column switch (LSS) is depressed.
The number and sequence, in which the functions appear is programmable. Programming mode is initiated by pressing the steering column switch (LSS) for 3 seconds.
Display: Prog 1:
If any required function key is now depressed, the corresponding function is stored in the "scroll". For instance, if the function keys outside temperature, limit and range are pressed after the display "Prog 1" has appeared followed by the SET/RES key, the selected functions are stored in this order in the scroll and can be called up one after the other by pressing the steering column switch (LSS).
Note that on completion of such a programming procedure, the function first stored is displayed immediately.
Installation Location On-Board Computer:
In the E36, the on-board computer is located in the centre console.
Test Functions:
The test functions serve the purpose of:
testing
checking the coding
troubleshooting

Certain values (e.g. correction factors) can be changed by way of the test functions. As already familiar from the BC IV in E 32/E 34 or the MID in E 31, some of the test functions are "locked", i.e. access-restricted. Proceed as described below in order to cancel this lockout function: (The relocking procedure is described at the end of the following steps):
1. Simultaneously press numerical keys "1000" and "10": Display shows: TEST NO.: - -
2. Enter number "19": Display shows: TEST NO.: 19
3. Press SET/RES key. BC display shows: LOCK:ON
4. Enter the sum of the addition of the days and months of the date set in the on-board computer (BC): e.g.: If 23.6. was set, the correct sum would be 23 + 6 = 29. Therefore, the number "29" would have to be entered in this example.
5. Press SET/RES key. The test function can now be accessed.
6. Lock the test functions on completion of tests: Select function "19" (see above). Display shows: LOCK:OFF: Press SET/RES key. LOCK ON. The test functions are now locked once again.

The following test functions are available:
1. Enter number "1": Display test; all LEDs and LCD segments light in both displays.
2. Enter number "2": Current consumption in I/100 km.
3. Enter number "3": Current consumption inI/hour.
4. Enter number "4": Average consumption; the expected range is calculated with this value.
5. Enter number "5": Calculate current range.
6. Enter number "6": Not used (no function).
7. Enter number "7": Average tank content in liter.
8. Enter number "8": Current vehicle speed in km/h.
9. Enter number "9": Display of operating voltage terminal "R" in Volt.
10. Enter number "10": Read out/change country-specific code.
11. Enter number "11": Read out/change units (am/pm).
12. Enter number "12": Average vehicle speed for calculating time of arrival.
13. Enter number "13": Calculate current time of arrival.
14. Enter number "14": Setting date of software - mask of BC IV.
15. Enter number "15": Production diagnosis.
16. Enter number "16": Production diagnosis.
17. Enter number "17": Display vehicle-specific data (total).
18. Enter number "18": Change over alarm tone continuous/intermittent tone.
19. Enter number "19": Lock/unlock test functions.
20. Enter number "20": Entry of a correction factor for consumption.
21. Enter number "21": Software reset (determined defect information and time/date are cleared); the reset is triggered by the "SET/RES" key.

Check Module:
The "check module" system consists of the following components:
Check module
Connected lamps
Level sensors for wash water and coolant
Scope of Functions Check Module:
The check module monitors the light sources of the vehicle (when switched on) which are important for road safety.
In addition, the wash water and coolant levels are evaluated by the check module and signaled to the on-board computer.
The check module is active for as long as terminal "R" (ignition switch position 1) is switched on.
Scope of Check Module Monitoring Functions:
The check module monitors following lamp circuits:
Left and right low beam.
Left and right brake light.
Left and right license plate light.
Left and right tail light (additional tail lights in the rear lid are not monitored).
Crossover connection of the monitoring circuits for low beam and tail lights makes it possible to detect failure of a low beam light and a parking light fuse.
Such a fuse defect is evaluated as a defective lamp in the corresponding circuit.
Also monitored are:
Coolant level
Wash water level

The on-board computer (BC) itself must evaluate several inputs of the check module. These are:
Brake light switch, for fuse monitoring.
Brake light test switch (active after the brake light switch).
Priority of CM Displays:
The individual defect displays are arranged in accordance with their degree of importance. The display characteristic is based on these priorities.
Priority 1:
Brake light electrical system, operating instructions
Brake light defective
After the minimum display time has elapsed, a priority 1 defect is always immediately displayed following a message.
When a group 1 message appears for the first time, the central indicator lamp (ZHL) flashes in the instrument cluster and the indicator symbol (triangle) synchronous to the ZHL.
The following defects belong to the Priority Group 2 of error messages for the check control:
1 brake light defective.
Low beam light defective.
Tail light defective.
License plate light.
Wash water level.

Check control inactive, operating instructions.
In the case of group 2 check control displays, the indicator symbol and the central indicator lamp in the instrument cluster are driven statically. The indication symbols flash only when a Priority 1 message is additionally indicated.

Priority group 3 defects do not directly influence vehicle safety:
Check coolant, operating instructions
Special Messages:
The special messages are on-board computer warnings. These warnings (temperature, limit, code) are effectively linked in the check control procedure.

The BC messages can interrupt the check control procedure for max. 8 seconds.

An exception to this is the "CODE" function. This display blocks all check control displays, in which CODE is disarmed.
The messages from the check module are transferred via an interface to the on-board computer (BC). The defect codes are made available to the BC as of terminal "R".

And breath :jaw-dropping
 
See less See more
#3 ·
Andy, why not disable Check Control for now then ?

Goto Test 11, and write down BOTH EINHEIT1, and EINHEIT2, then change EINHEIT1 to BC and EINHEIT2 to FF

That should disable Check Control - But like I say, write down the current values so you can restore them should you need to.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top