SMG Pump Bleeding Issues After Relocation

[werfer]

When I try to bleed the system using my Schwaben tool, it stops just a few seconds in and says

"Service function running...
Test status:
No. 3=
Test procedure:
No. 70=Shift gate mid-position cannot be set"

If I hit OK it then says

"Service function not complete correctly.
Action:
1. Rectify All active fault code entries.
2. Check hydraulic oil level at expansion tank"

The fluid level is fine and I can't think of anything that I would have messed up along the way. Anyone have any ideas?

[oceansize]

Were you having any SMG issues prior to relocation? If so did you fix those issues before you relocated?

[werfer]

No issues beforehand. I suppose I should mention that I did replace the pump motor with a Burkhart one during the relocation.

[oceansize]

Ok, I had to ask because I've seen people assume an existing problem would be fixed simply by relocating. Out of curiosity what prompted you to replace the motor?

The Schwaben tool is good but you really need INPA with the full suite of SMG utilities so you can easily view pump pressures, temperatures, test the accumulator, etc.

1. What SMG diagnostic trouble codes (DTCs) are being generated?
2. I found that I had to remove the pump from the relocation bracket, orientate the pump to its original position (the red collet pointing to the sky), detach the hose at the pump, bubbles came out, reattach the hose and then bleed.

[Irhase46m3]

Hi There - Could you provide a bit more detail as to what components you got for relocation? Did you get burkhart bracket as well? If so, try taking the pump out and place it in a horizontal position (same position it was sitting in before you relocated it) and restart the bleed process. Burkhart covers this in their wiki.

Also, do you hear the pump priming?

Best,
Irhase46m3

[werfer]

Ok, I had to ask because I've seen people assume an existing problem would be fixed simply by relocating. Out of curiosity what prompted you to replace the motor?

The Schwaben tool is good but you really need INPA with the full suite of SMG utilities so you can easily view pump pressures, temperatures, test the accumulator, etc.

1. What SMG diagnostic trouble codes (DTCs) are being generated?
2. I found that I had to remove the pump from the relocation bracket, orientate the pump to its original position (the red collet pointing to the sky), detach the hose at the pump, bubbles came out, reattach the hose and then bleed.

I replaced the motor just as a preventative measure. I was trying to bleed with the pump oriented horizontally.

38 SMG: ON period, hydraulic unit (OBDII: P1 717)
61 SMG: Voltage supply
15 SMG: Activation, hydraulic-pump relay
53 SMG: Transmission adaptation

11 DME: SMG shift sequence

[werfer]

Hi There - Could you provide a bit more detail as to what components you got for relocation? Did you get burkhart bracket as well? If so, try taking the pump out and place it in a horizontal position (same position it was sitting in before you relocated it) and restart the bleed process. Burkhart covers this in their wiki.

Also, do you hear the pump priming?

Best,
Irhase46m3

I'm using a bracket made by a forum user back on the old m3forum.net. Can't remember his name. Burkhart lines, harness extension, and motor. I do not hear the pump prime at all. I tried to start the car and nothing would happen. Wouldn't turn over or anything.

I suppose I should also mention that I started this project a looong time ago. Relocated the pump, installed a 996 big brake kit, and then the car sat for a long time on jack stands with the intake out of it because life got in the way and I didn't finish the project. Just recently, I finally found some time and finished putting everything back together (reinstalled the intake manifold, cabin filter housing, new battery, oil change, wheels and tires, etc.) Everything went fine until it came time to bleed the pump.

[oceansize]

Battery fully charged and have a battery tender attached? SMG procedures do not like a half charged battery.

Also the salmon relay could be misbehaving based off those DTCs. I would replace that before you go any further if you haven't already.

You sure your harness is connected on both ends securely (arrow to arrow)? Check your harness for continuity to be on the safe side. My harness came with one of the pins not seated properly.

[sapote]

When I try to bleed the system using my Schwaben tool, it stops just a few seconds in and says

"Service function running...

No. 70=Shift gate mid-position cannot be set"

2. Check hydraulic oil level at expansion tank"

The tail shifter actuator doesn't move under computer control commands. This could be due to air in the pump and it failed to pressurize the system. No pressure then no actuation. The new location is much higher than before, so air is not easily bubbling up to the reservoir as stock setup. You need to temporarily lower the pump/control valves down to get most air out for the pump to work first, then relocate it back to the desired location.

[Irhase46m3]

I'm using a bracket made by a forum user back on the old m3forum.net. Can't remember his name. Burkhart lines, harness extension, and motor. I do not hear the pump prime at all. I tried to start the car and nothing would happen. Wouldn't turn over or anything.

I suppose I should also mention that I started this project a looong time ago. Relocated the pump, installed a 996 big brake kit, and then the car sat for a long time on jack stands with the intake out of it because life got in the way and I didn't finish the project. Just recently, I finally found some time and finished putting everything back together (reinstalled the intake manifold, cabin filter housing, new battery, oil change, wheels and tires, etc.) Everything went fine until it came time to bleed the pump.

Make sure that the harness connections are correctly connected on both ends (not lose) - Also, make sure that the pins of the motor are correct as well and not lose. If the pump isnt priming at all when the car awakens then it has to be electrical related, check the salmon relay in the fuse box.

Another thing i would recommend, if you opened the pump itself and you have 0 fluid within, try to add some fluid directly in the pump (fit as much as you can) before connecting the reservoir - Try not to primp the pump dry (assuming you get to that step)

Hope this helps!
Irhase46m3

[werfer]

I thought the salmon relay was supposed to be unplugged during the bleed procedure? However, I did try with it plugged in and results were the same. Looks like I have a few things I need to check/try out. I really don’t want to take out the intake manifold again to check the lower harness connection. Reckon I can check it from underneath through the wheel well area?

[werfer]

Alright so I was able to get to the lower connection through the wheel well. All connections look good. Put in a new salmon relay. Put a charger on the battery. Pump still won’t prime and the bleed procedure gets the same error a few seconds in.

I’m about to just get it towed somewhere. I’m at my wit’s end with this car and I don’t have a lot of time. If anyone has a suggestion for a good shop that is familiar with the SMG system in the south/central Indiana region, let me know. Indianapolis, Cincinnati, Louisville, etc.

[eacmen]

Alright so I was able to get to the lower connection through the wheel well. All connections look good. Put in a new salmon relay. Put a charger on the battery. Pump still won’t prime and the bleed procedure gets the same error a few seconds in.

I’m about to just get it towed somewhere. I’m at my wit’s end with this car and I don’t have a lot of time. If anyone has a suggestion for a good shop that is familiar with the SMG system in the south/central Indiana region, let me know. Indianapolis, Cincinnati, Louisville, etc.

Winning Formula is where the previous owner of our current car (SMG) took his vehicle.

[Arith2]

Check voltage to the terminals in the connection. Pull out the old wiring diagrams and have at it. The harness could also be wired wrong. Double check your motor replacement just to be sure. It worked fine before, now you've changed the motor and relocated it. It's easy to miss little things when we stop in the middle of a project. Ask me how I know.

[eacmen]

Check voltage to the terminals in the connection. Pull out the old wiring diagrams and have at it. The harness could also be wired wrong. Double check your motor replacement just to be sure. It worked fine before, now you've changed the motor and relocated it. It's easy to miss little things when we stop in the middle of a project. Ask me how I know.

Concur, checking voltage at the pump side connector should tell you if voltage is making it to the electric motor on the pump.

Those pins inside the electrical connector can be a pain to seat correctly. I wouldnt be surprised if the motor pins werent seated in the connector.

Are you able to read codes etc from the smg unit?