SMG Problem !!!! any suggestion?

[khaledalx]

Hi

I just bought 2004 M3 SMG. About 100k miles.

1-Drove fine for about 1,000 miles (highway).

1.1 when i drove in a traffic jam I noticed a "grinding" noise from under the car with the SMG light illuminated.

2-I Turned off car, It did not come back on after restart.

3-Drove car about 10 miles and the SMG light came on again.

4-Then it was not shifting normally. Would drop into 0 when coming to a stop.

5-Sometimes will automatically go back into 0 gear, other times I had to manually shift it back to gear. Grinding noise is more noticeable.

6-One time would not shift past 2nd.

7-Let it cool for about 1 hour. Was able to drive for about 10 miles with no issue, no SMG light. Grinding still noticeable however.

2 Videos attached

Please help me diagnosing this issue

[mazin]

If you haven't got the computer diagnostic done, its good to get that to see what problem is logged in car computer. That should be enough to give heads up and get started with some educated guess work.

[khaledalx]

thanks Mazin

do u have any clue how can I check it by computer i.e. shall I go to the agency of BMW or I can do it with outsiders ?

thanks again

[individual]

my car is at the moment at a garage called German Car Services. The owner is Georges and he has the equipment to check your car. His garage is at Business Bay. Call him at: 0501516757

good luck!

[king]

thanks i have gone to these guys and they did a good job.

[individual]

thank you for your feedback! I hope it's nothing serious with your car!

[albert]

Just curious guys, whats SMG?

[individual]

it's the Semi Automatic Manual Gear for the M-Series

[GhassanM3]

albert wrote:

> Just curious guys, whats SMG?

Sequential Manual Gearbox.

Its not Semi Automatic...Its identical to the Manual transmission except that the clutch is controlled by the computer via the SMG pump.