BMW Z4 Hidden Menu - Coolant Temp, Software Reset

As promised in the previous video, today I’m showing you how to unlock the hidden menu on the BMW Z4 E89. This works on many other BMWs of the same age. Such as BMW e90, BMW e92, etc. you will find that you can see a lot of useful information such as the coolant temperature, perform instrument cluster test, sound test and even reset the software.

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How to Calculate compensation numbers:
If you calculated that your car is getting 30mpg, but car shows 33mpg you are off by 9.09% (3/33=9.09%). Once you are in the hidden menu, you will notice that the factory default is 1000, so if you need to adjust it by 9.09%, it would become 909 instead of the 1000 (1000+9.09%=1091).

List of all menu items:
1.0 Chassis number
1.1 Kilometer count
1.2 Parts number
1.3 Coding-, Diagnostic- and Bus-index
1.4 Production Date (Calendar week/year)
1.5 Hard- and Software status
1.6 Injector status, Cylinder count, Engine factor.
2.0 Combisystem Test
3.0 Service intervall counter
4.0 Actual fuel consumption in l/100km. eg.0154 = 15,4 liters/100kms.
4.1 Consumption in liters/100kms.
5.0 Distance consumption in l/100kms.
5.1 Actual rest distance with available fuel in Kms.
6.0 Actual amount of fuel in tank. eg. 123321 =12,3liters left 32,1 liters right
6.1 Total amount of fuel in tank.
6.2 Show value of Fuel guage. 1= both senders OK, 2= sender failure, 3=ti signal implausible (no reading)
7.0 Actual coolant temp.
7.1 Actual outside temp.
7.2 Actual engine revs.
7.3 Actual speed
9.0 Actual on board voltage (Battery)
10.0 Land codes
11.0 Unit codes
13.0 Gong test
14.0 - 14.4 On board diagnostic codes. eg 000000 = no failures
19.0 On/Off for Test menu.
20.0 Correction factor for Fuel consumption
Formula for correction:
Shown consumption x 1000 / user defined consumption
Push the trip reset button to begin the correction. Numbers count up from 0-9, when correct number shows push trip reset button.
20.1 Sets 10ths. for consumption factor
20.2 Sets 100ths. and 1000ths. for consumption factor
20.3 Saves the new consumption factor and shows new value
21.0 Software reset. (Same as disconnecting battery)