E46 M3 SMG Service
Posted: Mon Sep 16, 2019 9:31 am
One of the guys on BMW fanatics recently purchased a low mileage M3 SMG convertible with only 69000kms on it but gear changes were jerky and harsh, so he took it to his mechanic to get it serviced with all the fluids replaced but this didn’t sort the issue so he contacted us to get the CSL software loaded. we recommended he service and bleed the system as well. He was hesitant at first since he just had the fluids changed out by he other mechanic, but in the end He agreed and brought us the car.


We start out by removing the old SMG fluid and realized quickly that the previous mechanic didn’t use the correct fluid , this now affecting the pressure in the system.

Under the light , this fluid is yellow

Old yellow fluid vs New Green SMG fluid. Old fluid is much thinner in viscosity.

The correct SMG fluid from BMW is green.

Once the fluid had been replaced, we bleed the SMG pump.

Now that the smg system has been serviced, bled, adaptations run and clutch pressure adjusted, We move onto loading the CSL Software

After that you have smoother, faster more direct shifts.
Customer was happy and collected his baby.



We start out by removing the old SMG fluid and realized quickly that the previous mechanic didn’t use the correct fluid , this now affecting the pressure in the system.

Under the light , this fluid is yellow


Old yellow fluid vs New Green SMG fluid. Old fluid is much thinner in viscosity.

The correct SMG fluid from BMW is green.

Once the fluid had been replaced, we bleed the SMG pump.

Now that the smg system has been serviced, bled, adaptations run and clutch pressure adjusted, We move onto loading the CSL Software

After that you have smoother, faster more direct shifts.
Customer was happy and collected his baby.
