Had my first SMG Cog Error on my CSL

[jonnysideways]

Hi All

After 2 years nearly and 6,000 miles I have just picked up a cog warning error on the dash.

I pulled the error logs from the Engine ECU, no errors on the SMG.

The battery has just been replaced, as if coughed its last breath, ironically just after the cog had come up, so the "Failed connection@ may have been wing to the battery.

17 SMG switching process
Error frequency : 1
Logistic counter: 40
Engine speed 1240.00 rpm
relative filling 48.00 %
Transmition status 1.00 -
DME-status 2.00 -
aufgetreten vor (rel. BZ) 0.40 h
0100 - Broken wire / Value missing
Error not present
Sporadic error
-------------------------------------------------------------
6 Time out SMG-CAN
Error frequency : 1
Logistic counter: 40
Engine speed 0.00 rpm
relative filling 0.00 %
Cooling water temp. 18.00 degrees C
Supplier voltage HR 10.10 V
aufgetreten vor (rel. BZ) 0.00 h
0100 - Broken wire / Value missing
Error not present
Sporadic error
================================================== ===========

So question is would the cog have been as of the above, or would this have through an engine light error, and the cog is owing to something SMG Related, such as the famous Salmon Relay.

I had the smg pump pressure looked at and its seems fine, running @ 60% and it primes ok etc.

Car drives fine and moves through gears, the error came on after sitting at a show all day, having locked and unlocked a few times, to the point the battery was very low.

any thoughts would be appreciated.

cheers

J.

[knoxville]

Does the gear indicator number on the dash flash? Every single time I've had the cog appear, I get flashing gears and it's always been the front left bonnet switch.

[toenheel]

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

[rstoughy]

Mine has been coming on in the race car with "Sporadic" errors. I've just been resetting it between sessions.
I think heat could be an issue with mine.

[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.

[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

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

[FMC]

Originally Posted by toenheel

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]

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

[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]

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