A/t Light On - At Self-diagnosis

[valf]

Had my A/T check light coming up lately and it disappeared as I added some missing Matic J in the transmission. (Might have added too much so will have to drain a little)

Anyway, it came back today and I did the manual procedure to check the ECU and the TCU codes.

ECU : 0000 so all good

TCU : 13, then longer one, then 3. Referring to the trans manual, it indicates :

- 13 : A/T 1st engine braking

- 3 : Torque converter solenoid valve

Since I know nothing about transmissions, maybe you guys could tell me how bad this is?

Cheers

[scotty nm35]

I was under the impression the two flashing codes are for the engine. Anyway, trying to diagnose and fix a trans using flashing lights will end in tears. Get it on a consult 3 and find out the actual codes then post them up. I have seen most of them occurring before.

[valf]

It's actually reading from the "A/T check" light number of blinks ( http://psedog.com/cars/fsm/g35/sedan/2003/at.pdf; page 99-100 )

Anyone in Sydney willing to give my car a consult 3 read ? Would be nice to go for a ride in another M35 too to compare and judge how laggy mine is

[valf]

Thanks to Duncan, could connect the car to a consult.

Here is what I got :

C-1208 - Pressure SW

P0615 - Starter Relay

Cleared the codes an lights didn't come up again. Still shudders at low rpm when steering.

[scotty nm35]

Have you popped the bung out of the battery compartment yet? Commonly the issue with auto trans codes.

The pressure switch is a common Attessa code, but I can't source the switches, you will need to buy a complete Attessa pressure pack to clear that one for good.

Sounds like you may have air in the steering rack, try getting on some gravel and turning slowly from lock to lock and see if it goes away, if you haven't changed the PS fluid, its a good opportunity to do that too.

[valf]

Not yet! Will do that asap.

Thanks Scotty for all that info!

[valf]

The pressure switch is a common Attessa code, but I can't source the switches, you will need to buy a complete Attessa pressure pack to clear that one for good.

Sounds like you may have air in the steering rack, try getting on some gravel and turning slowly from lock to lock and see if it goes away, if you haven't changed the PS fluid, its a good opportunity to do that too.

It's quite strange actually. Sometimes the car doesn't shudder at all, no lights on the dash. Sometimes it does shudder and the 4WD light comes up. Car will be weird on tight turns until next time I start it.

Not sure if it's a coincidence or if these two issues are related.

Edited November 9, 2015 by valf

[valf]

Have you popped the bung out of the battery compartment yet? Commonly the issue with auto trans codes.

Am I missing something here ? Couldn't see any bung in there or anything to be flooded besides the battery itself. Is there something else under that compartment ?

[Reprieve]

It's under that black tray on the right

[valf]

Alright !

Found the bung, it was full of dirt but no pool in there. Could see that there was one before though.

Here is the picture for whoever is looking for it

Edited November 28, 2015 by valf