Symptom: BMW MINI car transmission fault indicator light, into the file impact, acceleration and the highest speed can only reach 8Okm / h.
    Maintenance process: Obviously, by the phenomenon of failure, can exclude the engine failure, should be the automatic transmission lock file problem, with OB-15 decoder to detect the automatic transmission fault code and found the fault code 010,011.
    010 supply supply voltage is bad
    011 supply supply voltage is bad / rpm signal sensor
    After the inspection, Base computer several fuses, battery voltage and control relays are normal (the engine can work properly, but also that the inspection items should be normal). Use OB-15 decoder to clear the fault code, and then road test, then everything back to normal.
    Fault analysis: the traditional MINI gearbox is the use of hydraulic control of its automatic shift, and for 07 years after the MINI. Basically, are using six-speed electronic control automatic transmission, the corresponding shift control, the main hydraulic control , Lock the clutch are controlled by the computer through the solenoid valve. Once the control computer detects the wrong signal or bad signal, the computer automatically disconnect the shift solenoid valve to protect the automatic transmission, resulting in gearbox lock in the third gear phenomenon.
    MINI The cause of the above failure should be the owner or other maintenance personnel overhaul the engine, in the KEY-ON state, had removed the Base computer, or some related relays, fuses, and did not do the aftermath, so the malfunction.
    Note: Due to the six-speed electronic control automatic transmission, the fault code output is digital signal (38pin diagnostic seat of the first 10 feet), so the traditional LED lamp method has been unable to detect, and must use BENZ original instrument, or OB -15, OB-91 decoder, in order to complete the fault code to read and eliminate.