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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 Thu, May-16-2019, 03:33:37 PM   #1
E46 Mystic M3
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Default SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

Just replaced the gear position sensor and I used INPA to adapt the SMG. No errors whatsoever, and I did it in order from f1-f3. Once finished, I cannot engage gears 1-3-5 and the smg light comes on. I know its not the gear position sensor because i put in a different smg computer and it shifts in all gears, just a little sloppy. What am I doing wrong? I want to use DIS to adapt the clutch but my DIS software isn't recognizing the car. Any help appreciated, this has been driving me crazy.
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Old Thu, May-16-2019, 10:26:21 PM   #2
aznniche
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

Usually skipping gears are compression springs related. You didn’t change them?
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Old Fri, May-17-2019, 07:32:54 AM   #3
E46 Mystic M3
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

I just replaced the compression springs. They were also not broken when i replaced them.
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1997 M3/4/5 Dakar Yellow AA Stage 1 Supercharger SOLD
2004 M3 Coupe 6MT Laguna Seca Blue SOLD and very missed
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Old Fri, May-17-2019, 05:40:05 PM   #4
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

give us the some background of car before the works were done.
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Old Sat, May-18-2019, 07:00:54 AM   #5
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

If you cannot engage gears 1,3,5 check the hydraulic line on the far left on the smg pump/hydraulic control unit. (on left when standing in front of car facing the hood)

That is the Hydraulic Line for Shift Travel 1
Gears 1,3,5. Follow this line to the gearbox actuator and check that the lines are tight and not leaking.

Hydraulic Line for Shift Travel 2
Gears 2,4,6 is on the opposite end of the HCU on the far right.

There are 2 shift travel solenoids on the HCU. (1 for gears 1,3,5, and one for gears 2,4,6) The solenoids work in conjunction with the pressure control valve mounted inside the gearbox actuator. The other 2 solenoids are; one for clutch control and 1 for selection angle cylinder actuation.

The piston in the shift travel cylinder must be moved in both directions (in/out) by pressure. Two pressure control valves are required to achieve this movement. With no current applied to the valves they are in the open position allowing connection of the cylinder chamber and the expansion tank. Applying current to one of the solenoids will cause hydraulic fluid to flow against the cylinder piston pushing it in one direction. Fluid from the other side of the piston will be forced through the second control valve into the expansion tank.

The position sensor that you installed is mounted directly onto the selection angle cylinder. check to see that it is installed properly. (car should also be in neutral during installation)

Last edited by SMG cog light; Sat, May-18-2019 at 07:03:56 AM.
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Old Sat, May-18-2019, 05:31:26 PM   #6
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

I think I was a little unclear about the problem. I have narrowed the problem down to a SOFTWARE issue since I have one smg computer that works fine but sloppy and one smg computer that cannot engage 1-3-5 after inpa adaptations. inpa adaptations ran with no error and then I couldn’t engage those gears. What am i doing wrong? Does anyone have DIS in the socal area that could help me out? Ive heard better things about DIS adaptations.
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Old Mon, May-20-2019, 09:45:55 PM   #7
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

Anyone?
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1997 M3/4/5 Dakar Yellow AA Stage 1 Supercharger SOLD
2004 M3 Coupe 6MT Laguna Seca Blue SOLD and very missed
2002 745i Sterling Grey SOLD, gone and not missed
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Old Mon, May-20-2019, 10:37:42 PM   #8
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

Did you put the GPS in upside down?
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Old Tue, May-21-2019, 10:43:55 PM   #9
E46 Mystic M3
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

Quote:
Originally Posted by jared212 View Post
Did you put the GPS in upside down?
Is that even possible? I think it just goes in one way. Ive done the GPS job twice so I know Ive been installing it right. Whats so weird about all this is that swapping another SMG computer will let me engage all gears, but the original computer to the car (the one I just adapted with INPA) fails to engage 1-3-5. This is why I know it is a software issue. Im not sure whats going on.
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1997 Toyota 4Runner SR5 (Daily)
2004 M3 Coupe SMG Mystic Blue SOLD
1997 M3/4/5 Dakar Yellow AA Stage 1 Supercharger SOLD
2004 M3 Coupe 6MT Laguna Seca Blue SOLD and very missed
2002 745i Sterling Grey SOLD, gone and not missed
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Old Wed, May-22-2019, 12:18:32 AM   #10
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Default Re: SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears

It can be flipped, failed the initial adaptation though IIRC. Why don't you just get another SMG computer? They are like $50 on ebay. Doing a complete reflash would also be a possible fix if you are into that.

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Discussing SMG INPA Adaptation Passes with No Errors, Cannot engage 1-3-5 gears 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 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)