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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.

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Old Fri, Apr-26-2019, 06:27:21 AM   #1
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Join Date: Apr 2013
Posts: 218
Reputation: 0 fastsoup is on a distinguished road


Default I think it's the SMG pump...hopefully not.

Hey hey forum!

If you are reading this, it usually means I'm having a bad day.

Took the M out for a drive today. SMG kicked me out of gear, and began flashing (0) in neutral. Sat at a light while everyone was honking at me, I continued trying to put it in gear and it would not go. Thew it in R and it engaged...much to my surprise...but I couldn't really go anywhere in rush hour traffic. So I shut the car off and began to call for a tow. Went back a few mins later and luckily it fired up again and I got it off the road. Drove it to a safe zone and headed for a parking lot and decided to increase the throttle and as that made the pump work harder to shift from 2-3, it kicked me into N again. Rolled to a stop and shut it down. Tried to turn it back on and nothing. The pump would not engage any gear and remained in N.

I swapped out the salmon relay - no luck. I checked the 40amp fuse that normally blows if the SMG pump is shot - was not blown. The resovoir for the SMG fluid with the ChF11s oil is completely full to the top (which worries me if that pump over primed and fried itself). Engine light came on and COG light. Scanned and found 3 transmission codes and 1 engine code using my Carly:

Engine / Motor
Fault Code: 0000B1
Fault Explanation: MIL-external infoault Code: 000038

Fault Explanation: :hydraulic pressure / symptom GLUE / Duty hydraulic unit
Fault Code: 000035

Fault Explanation: :Solenoid valve coupling
Fault Code: 000035

Fault Explanation: :Print ribbon HE undershoot / Gear monitoring 3

I had the car towed to my trusted Indy because at this point I was out of options. My Indy is pretty good but I'm hoping anyone with similar symptoms can chime in and possible toss out some ideas in case my Indy leads me down an "incorrect" path.

Clutch/flywheel/slave cylinder replaced at 172k kilometers. Car currently at 195k kilometers. Only comes out in the Spring/Summer. In the last 100kms I replaced the rear diff oil, the tranny oil, engine oil, and sucked out and replaced the SMG ChF11s fluid. Ensured the pump primed and filled to proper mark on cap.

Thanks guys,


Last edited by fastsoup; Fri, Apr-26-2019 at 06:34:49 AM.
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Discussing I think it's the SMG pump...hopefully not. in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)