🔧 How to install an OBC 18 buttons on your BMW E36? (DIY) + Secret menu

Step by step guide to retrofit the 18 buttons on-board computer (OBC) to your BMW E36! ✌

🔧 Parts needed:
➡ OBC 18 buttons
➡ White connector X1071 with full wiring or pigtails
➡ Turn signal with BC feature

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🔍 OBC Secret menu

Unlocking secret functions on your BMW E36 18 buttons OBC is easy, and give you access to interesting information or settings : change language, see real time values like voltage, speed, fuel left in the reservoir, and many more

▶️ How to unlock
➡ Press 1000 and 10.
➡ At the TEST prompt, enter 19.
➡ Press SET, and you should see LOCK:ON.
➡ Press the DATE key.
➡ Sum the two date numbers (month and day) together (Example - today is March 16th, so you add 3 and 16 - that gives us 19.
➡ Enter the number you've calculated (13), and press SET.
➡ Your OBC is now unlocked


▶️Available tests
#1 Display test
#2 Current consumption L/100km
#3 Current consumption L/h
#4 Average Consumption
#5 Current range
#6 unknown
#7 Average Fuel in Tank (L)
#8 Current Speed (km/h)
#9 System Voltage
#10 Country - Language setting
#11 Check control setting
#12 Average Speed (km/h)
#13 ETA
#14 OBC Software date
#15 Production diagnosis
#16 Production diagnosis
#17 Display vehicle specific data
#18 Alarm setting
#19 OBC Lock & Unlock
#20 Correction factor for consumption
#21 OBC Reset


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#M3 #E36 #DIY #Retrofit #Upgrade #BMW #OBC