BMW Start Button stop from shutting off Ignition while writing OBD.

[bemek012]

Hey Guys,
in the past i had issues with BMW Start Button Ignitions. Because while writing and causing problems not sure if the Ignition kept shutting off because the Dashlight stayed on but writing failed.

I tried the 2 fast press of the button method.
I tried holding 4 sec or 10 sec method.


Is there something im missing ?


Thanks in advance.

[jurebv]

seat belt?

[chrisimerk]

You have to press start button without pressing clutch pedal or brake pedal and cluster show you all the lights but car doesn't start never press brake pedal or clutch while pressing start button as it will auto switch off during write or read hope this helps

[bemek012]

You have to press start button without pressing clutch pedal or brake pedal and cluster show you all the lights but car doesn't start never press brake pedal or clutch while pressing start button as it will auto switch off during write or read hope this helps


I did not press Brake Pedal or Clutch while klicking the Start Stop buttons at the beginning.

[bemek012]

ANY TIPS ?

[jurebv]

seat belt on

[Chriz123]

e-series bmw or wich one? if so than try unplug ibs sensor

[bemek012]

E60/61 had this problem twice in the past ? Does anybody have some other tips?

[bobolin4o]

Yes, I have few...
Always connect stabilised power supply, min. 100 A at 14 volts...
Open the driver door and fasten driver seat belt.
Never ever had any problems with any BMW!

[Lambda1]

Newer BMWs sometimes .... need press quickly 3 times start button in row to enter service mode. Thats all. No shutting down ecu...

[bemek012]

Any other ideas? Or somebody that experienced something like that and knows for sure ?

[bemek012]

Anyone with some ideas ?

[MorePowerforCar]

Never had Problem with this ecu
I do like Kess say an 80A Power supply