SMG troubleshooting FAQ

drunk hal · Tue, Feb-24-2009, 09:17:48 PM

thanks for the compliments

be sure and add your comments if you see something that isn't covered or is incorrect/unclear

.333 snubnose · Tue, Feb-24-2009, 11:00:40 PM

good idea to keep an extra smg relay in the glovebox...
but if you find yourself in a jam and didn't buy an extra, there is one behind the glovebox...
part #2
http://www.realoem.com/bmw/showparts...=61&fg=25&hl=6

(don't know what effect, if any, this will have by disconnecting the air pump...but will work in an emergency if you need to get the car out of an intersection or off the highway)

Gordon Gekko · Tue, Mar-10-2009, 08:45:01 PM

Quote:

Originally Posted by .333 snubnose

good idea to keep an extra smg relay in the glovebox...
but if you find yourself in a jam and didn't buy an extra, there is one behind the glovebox...
part #2
http://www.realoem.com/bmw/showparts...=61&fg=25&hl=6

(don't know what effect, if any, this will have by disconnecting the air pump...but will work in an emergency if you need to get the car out of an intersection or off the highway)

Wow, very interesting find. How exactly can you get to this relay (through the cabin or under the hood...)?

windy · Sat, Mar-21-2009, 04:13:39 PM

Here's a new one for you all...

My mate's M3 sometimes 'misses' a gear and crunches it. He reckons it didn't do it for the first year of ownership, but has done it 4 or 5 times in the last 6 months. Says it's a different occasion each time - has happened to him on track twice (scary!), once as he was cruising along about 5 mins after starting it, and once with me in the car on the motorway. Same again, simply cruising along. Thing he was changing up to 6th. On track he reckons he never gets above 4th but can't remember what gear he was selecting when it crunched.

Any suggestions? It's out of warranty so I told him to avoid the dealers initially as they'll just replace the pump/box.

I checked the hydraulic fluid with him and it seems a little above the max marker...

yaja23 · Sat, Mar-21-2009, 05:38:23 PM

Hey Hal,
I just bought an extra Relay from Tischer for $6. Cheapest price I've seen for the relay. Perhaps put that on Post 1.

tinman143 · Sat, Mar-21-2009, 05:56:07 PM

subscribed

Mash3 · Sat, Mar-21-2009, 06:33:08 PM

Random things:

What about the faulty SMG hydraulic temperature sensors I read about last week?

Keep in mibd that Error Code FC 68 indicates a worn out clutch. Sensors detect a mismatch in input and output speeds related to gear.

greg

waiting · Sat, Mar-21-2009, 09:18:56 PM

Quote:

Originally Posted by M3FORM33

Great write up Hal, its gonna be a very usefull piece as people start getting more mileage and start having probs with the SMG. I went through hell and back with mine!

what kind of problems?

Blown_m3 · Sun, Mar-22-2009, 12:31:22 AM

My smg is not adapting properly. We recently upgraded to the new software. Now we have rpm dropping issue on first and reverse gear and shifting lags. when I shift form 3-4 clutch hesitates and rpm almost stays where it is then start picking back up. Should I do the whole smg reset procedure again?

Mash3 · Tue, Mar-24-2009, 10:42:55 PM

Guys, remember to check the SMG fluid before doing any trouble-shooting. I just spent a month doing everything else, and was ready to replace the pump, only to find that a hose had cracked and the fluid had leaked out. $20 part instead of a $2,000 part...

Greg

.

Sat, Mar-21-2009, 05:38:23 PM	#35
yaja23 M Addict Join Date: Jan 2008 Posts: 1,376 In the garage: '03 BMW M3 Reputation: 0 Location: Bay Area	Hey Hal, I just bought an extra Relay from Tischer for $6. Cheapest price I've seen for the relay. Perhaps put that on Post 1. __________________ Orion V2 Angel Eyes, OEM LED TailLights, Valentine1 Hardwired, OEM ZCP Rims, Turner Subframe Reinforcement Kit, Vorsteiner Double Sided CF Bootlid

Sat, Mar-21-2009, 05:56:07 PM	#36
tinman143 Registered User Join Date: Mar 2008 Age: 39 Posts: 1,764 Reputation: 0 Location: union city, ca	SMG Subscribe subscribed __________________

Sat, Mar-21-2009, 06:33:08 PM	#37
Mash3 Look out below! Join Date: Aug 2003 Age: 43 Posts: 6,550 Reputation: 0 Location: Hollywierd	Random things: What about the faulty SMG hydraulic temperature sensors I read about last week? Keep in mibd that Error Code FC 68 indicates a worn out clutch. Sensors detect a mismatch in input and output speeds related to gear. greg __________________ Forum Member Since 2003. . . 2004 M3, SG/ IR. 75k miles. Original owner.

Sun, Mar-22-2009, 12:31:22 AM	#39
Blown_m3 Always want more boost! Join Date: Feb 2008 Posts: 1,588 Reputation: 0 Location: SA Town, Texas	My smg is not adapting properly. We recently upgraded to the new software. Now we have rpm dropping issue on first and reverse gear and shifting lags. when I shift form 3-4 clutch hesitates and rpm almost stays where it is then start picking back up. Should I do the whole smg reset procedure again? __________________ Sold 2002 BMW ///M3 SMG - Steel gray, AA Gen 2 Level 3+ Meth ///HPF stage1 clutch and AA lwFW, CSL brakes///M 2x2 cf Interior,Vors CF Roof with sunroof, CSL Bumper,Diffuser,GC coilovers,Volks/Rayz(ROJA)Wheels w/ Michelin PS2 245/35/19 & 275/30/19, Powerflex RTAB, rouge transmission mounts, Unmitza Angle eys and 8000k HID, AA headers and AA Gen IV exhaust,HardWired V1, Dynavin:v5, JL audio Custom 1 w3v3 ported & 500/5 Amp/AudioControl DQX, lts2.

Tue, Mar-24-2009, 10:42:55 PM	#40
Mash3 Look out below! Join Date: Aug 2003 Age: 43 Posts: 6,550 Reputation: 0 Location: Hollywierd	Guys, remember to check the SMG fluid before doing any trouble-shooting. I just spent a month doing everything else, and was ready to replace the pump, only to find that a hose had cracked and the fluid had leaked out. $20 part instead of a $2,000 part... Greg . __________________ Forum Member Since 2003. . . 2004 M3, SG/ IR. 75k miles. Original owner.

Tue, Feb-24-2009, 09:17:48 PM	#31
drunk hal Registered User Join Date: Jan 2006 Posts: 15,023 Reputation: 0	thanks for the compliments be sure and add your comments if you see something that isn't covered or is incorrect/unclear

Tue, Feb-24-2009, 11:00:40 PM	#32
.333 snubnose Registered User Join Date: Feb 2008 Posts: 474 Reputation: 0 Location: Golden State	good idea to keep an extra smg relay in the glovebox... but if you find yourself in a jam and didn't buy an extra, there is one behind the glovebox... part #2 http://www.realoem.com/bmw/showparts...=61&fg=25&hl=6 (don't know what effect, if any, this will have by disconnecting the air pump...but will work in an emergency if you need to get the car out of an intersection or off the highway)

Sat, Mar-21-2009, 04:13:39 PM	#34
windy Registered User Join Date: May 2006 Posts: 2 Reputation: 0	Here's a new one for you all... My mate's M3 sometimes 'misses' a gear and crunches it. He reckons it didn't do it for the first year of ownership, but has done it 4 or 5 times in the last 6 months. Says it's a different occasion each time - has happened to him on track twice (scary!), once as he was cruising along about 5 mins after starting it, and once with me in the car on the motorway. Same again, simply cruising along. Thing he was changing up to 6th. On track he reckons he never gets above 4th but can't remember what gear he was selecting when it crunched. Any suggestions? It's out of warranty so I told him to avoid the dealers initially as they'll just replace the pump/box. I checked the hydraulic fluid with him and it seems a little above the max marker...

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