SMG - not its usual brilliant self today. Pump failure?

jaxZ4 · Post by **jaxZ4** » Tue Feb 14, 2012 8:25 pm

Hi - as a fellow SMG lover I'm curious to see how you got on ? any news ? Hope it's all good and repaired for you.

PetKiller · Post by **PetKiller** » Wed Feb 15, 2012 11:27 pm

Not got any definitive answers yet. Battery went flat by the time it was recovered to the garage doing the work and after it was recharged the car worked fine - however apparently the next day it started acting up again.

It could be to do with low SMG fluid. I need to get a bit more clarification on this as it does not make sense to me just yet (but I am not the person poking around underneath it!). Or a combination of low fluid and low charge in the battery?

Been doing a lot of reading on SMG (and SSG) faults the past week - plenty of people have had problems. The pump itself seems to get blamed mostly but I am not convinced it is always the issue. Parts associated with the system are expensive probably because the volumes are not high enough? And only BMW make the parts probably for the same reason.

PetKiller · Post by **PetKiller** » Sun Feb 19, 2012 8:06 pm

Got the car back on Saturday. It is driving beautifully again. It seems, for now at least, the cause of my problems has been low fluid in the SMG/clutch system, compounded by a low charge in my battery (possibly down to the cold weather).

I don't want to crow too loudly on this for now, but I expect that if the fault has not returned in some way over the next week all should be well.

Tekoo · Post by **Tekoo** » Mon Nov 12, 2018 7:11 am

For future owners with the SMG problem please note:

The information in this thread is NOT accurate. Relay ASC (brakes) is NOT the same thing as relay SMG (hydraulic pump for transmission).

Also the correct fuses to check are fuses F1a and F63 (not what’s mentioned in old post above)!

Please check this thread for correct info and part #
https://www.bimmerforums.com/forum/show ... y-location

kis · Post by **kis** » Mon Nov 12, 2018 5:43 pm

Not sure my car has a 1a or 63 fuse

Tekoo · Post by **Tekoo** » Mon Nov 12, 2018 6:05 pm

These fuses are not located in your usual cabin fuse box location. Check this thread for fuse location
https://www.bimmerforums.com/forum/show ... y-location

Also note that Z4 E85 vehicles vary according to model, production year and country of origin! You would have to check your vehicle’s specific wiring diagrams to confirm the correct fuses in your vehicle.

kis · Post by **kis** » Tue Nov 13, 2018 10:06 am

Images don't work for me without registration, you uploaded them on the other forum? Can you upload them here too?

mac27040 · Post by **mac27040** » Thu Nov 22, 2018 5:18 pm

funny how realoem show the relay in a different position and colour.

http://www.realoem.com/bmw/enUS/showpar ... Id=61_4209

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