Had my first SMG Cog Error on my CSL

[jonnysideways]

some toys whilst my car was sat in the garage this week.

[jonnysideways]

Just needed adaptations, as the car had learned the old GPS settings, so needed to learn the new settings as the new GPS actually was working, so after the adaption system was ran, all was well again. In my case of course the car was working fine before the cog light came on, as in all gears were there and the car was working, just had the errors 36/37 as well as the cog light (from the errors)

[jonnysideways]

so update.

After a new gear position sensor swap, and SMG Adaption all gears are now present and correct, cog has now gone away

cheers for comments.

[Rick H]

I got the cog warning (without flashing) yesterday from cold start. I drove it for about a half hour (and all gears worked fine in auto and manual), parked up to nip in Tesco and when I restarted the car, the cog was gone. Didn't come on later in the day when I was returning home

Ordered a couple of Salmon Relays this morning so will replace and hopefully not see the cog again for a while.

[outnumbered]

Doesn't lack of 2/4/6 suggest it might be the detent spring, or something in that area?

[nw942]

UPDATE.

Replaced GPS. Indy popped it in for me. The cog light is now off. But only have half the box 135r. Thebox will not shift into 246.

Tried to run smg adaptation as assumed this would tell gearbox what was what, but the procedure will not run.

daft q. But is there anything I'm missing.

Car drives ok but will error if you try and shot into 246.side of box.

Do I just need dealer to recalibrate GPS or similar ?

Cheers
John

This guy had the same issue and used GT1 to run the 'Adapt Transmission Fully' adaptation on it:

http://forum.e46fanatics.com/showpost.php?p=16170906&postcount=17

Not sure what software you used, but may be worth running it again (if you haven't already).

[jonnysideways]

UPDATE.

Replaced GPS. Indy popped it in for me. The cog light is now off. But only have half the box 135r. Thebox will not shift into 246.

Tried to run smg adaptation as assumed this would tell gearbox what was what, but the procedure will not run.

daft q. But is there anything I'm missing.

Car drives ok but will error if you try and shot into 246.side of box.

Do I just need dealer to recalibrate GPS or similar ?

Cheers
John

[cslsuperfan]

The first thing I would change is the salmon relay for about £10.

As the cars not done much miles.

Mine lost gears and had flashing cog light. Elms done pressure test on SMG pump and fine, its been fine since relay.

Excellent Billy...

A bit of luck has been a long time coming :thumbs:

[billyboysm3]

The first thing I would change is the salmon relay for about £10.

As the cars not done much miles.

Mine lost gears and had flashing cog light. Elms done pressure test on SMG pump and fine, its been fine since relay.

[jonnysideways]

Does any one know the running values of the following.


Position-Shift Path 1 (Gear)


Position-Selector Angle 1 (Shift Path)


Mine runs between 1022-1023 (1023 Being highest available value)


when changing gear on the drive, wondered if they should move around more like the Position-Shift Path 2 & Position-Selector Angle 2.


Plus, if the 2nd sensors are supposed to be 50% less that the 1st Sensors there's an issue as they don't actually represents this relationship.


But this call all be a red herring ;0) May just bite bullet and get a new GPS component as per a member recommendation ;0) Cheers

[nw942]

I had a flashing gear light this weekend followed by the cog, which got me reading up on all things SMG.

This link may be of use: http://forums.m3cutters.co.uk/showthread.php?t=105898.

Post number 11 in particular seems very useful in diagnosing what SMG particular issue one may have.

HTH

[jonnysideways]

wish mine was this. lol. Car does it when cold, and no change in cog.

[FMC]

Mine came on recently when hooning around wales.. stopped the car and let it cool down a tad and then it was fine.

Same happened to me in London traffic, Pulled ot the side to cool down then all good.

[jonnysideways]

So Diag software reports 2 erorrs on SMG.

37 shift path (gear) position sensor evaluation.
36 selector angle (WW) position sensor evaluation

Can clear cog, and then error comes straight back as does the cog.

Funny thing is the error will not clear, but when I look at the live status of the SMG, the angle sensor and shift path (gear) position sensor seem fine and are operating as I would expect (being no expert)

cheers in advance any thoughts please ;0)

Full errors:

37 shift path (gear) position sensor evaluation

Error frequency : 1

Error occured 1. times at:

current kilometres 181760.00 km

environmental temperature 12.00 Grad C

voltage supply Ubatt 12.03 V

actual gear 1.00 1st gear

Raw value of gear position 1 1023.00 Ink

Raw value of gear position 2 401.00 Ink

actual shift path 802.00 Ink

not relevant 554.00 -

sensor voltage supply A 5.01 V

sensor voltage supply B 4.98 V

Error occured 2. times at:

current kilometres 0.00 km

environmental temperature -48.00 Grad C

voltage supply Ubatt 0.00 V

actual gear 0.00 0/neutral

Raw value of gear position 1 0.00 Ink

Raw value of gear position 2 0.00 Ink

actual shift path 0.00 Ink

not relevant 0.00 -

sensor voltage supply A 0.00 V

sensor voltage supply B 0.00 V

Error occured 3. times at:

current kilometres 0.00 km

environmental temperature -48.00 Grad C

voltage supply Ubatt 0.00 V

actual gear 0.00 0/neutral

Raw value of gear position 1 0.00 Ink

Raw value of gear position 2 0.00 Ink

actual shift path 0.00 Ink

not relevant 0.00 -

sensor voltage supply A 0.00 V

sensor voltage supply B 0.00 V

control unit specific msg.

Error present

-------------------------------------------------------------

36 selector angle (WW) position sensor evaluation

Error frequency : 1

Error occured 1. times at:

current kilometres 181760.00 km

environmental temperature 12.00 Grad C

voltage supply Ubatt 12.03 V

actual gear 1.00 1st gear

Raw value of gear selector position 1 1023.00 Ink

Raw value of gear selector position 2 277.00 Ink

actual selector angle 554.00 Ink

not relevant 802.00 -

sensor voltage supply A 5.01 V

sensor voltage supply B 4.98 V

Error occured 2. times at:

current kilometres 0.00 km

environmental temperature -48.00 Grad C

voltage supply Ubatt 0.00 V

actual gear 0.00 0/neutral

Raw value of gear selector position 1 0.00 Ink

Raw value of gear selector position 2 0.00 Ink

actual selector angle 0.00 Ink

not relevant 0.00 -

sensor voltage supply A 0.00 V

sensor voltage supply B 0.00 V

Error occured 3. times at:

current kilometres 0.00 km

environmental temperature -48.00 Grad C

voltage supply Ubatt 0.00 V

actual gear 0.00 0/neutral

Raw value of gear selector position 1 0.00 Ink

Raw value of gear selector position 2 0.00 Ink

actual selector angle 0.00 Ink

not relevant 0.00 -

sensor voltage supply A 0.00 V

sensor voltage supply B 0.00 V

control unit specific msg.

Error present

================================================== ===========

[jonnysideways]

Hi. Just the cog. no other info.

I was coming home from work, so had just been in it for 4 minutes, don't think it was hot.