diagnostics done engineside/gearbox side no fault only after selecting gear the sign shows red cog when driving.
what does engineside / gearbox side diagnostics mean?
what was checked/tested and how, and with what equipment?
garage done the test with diagnostic eqipment.
I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.if the transmission light is on, there should be a fault that can be read with appropriare diagnostic equipment
if the shop you are using can't read a code, they likely dont have the proper equipment
your symptoms suggest a problem with the slector switch or possibly an internal fluid issue.
a proper fault scan and test plan on a factory BMW tool will be required to verify.
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.