Hello all,

I need a help with my D2 2004 automatic transmission switch when selecting S and M Mode.

while driving when i select S mode on the Gear and M in Low Gear .. it works fine for a while then it turn it self off ..

i don't know if the problem related to the Electronic automatic transmission ECU or the Engine control module ECM or maybe something else that i can't relate to ..

i would appreciate any help from anyone who had the same problem and managed to fix it .

thank you

 

i had had this happen last summer on my 03
not sure what happen or if there was any tranny codes but it went away on its own

 

Check the shifter bezel plastic housing for cracks. If the housing is cracked/broken it can cause the button to be enabled/disabled while driving.

 

thanx Redwhitekat

Do you remember if anyhow you touched the ECU or the ECM wires ? unplunged or removed and reinstalled ?

 

thanx .. will do look into that !

 

well it was sitting for a while and battery drained. Not sure if that had anything to do with it

 

Just to keep following the same problem.
After covid 19 lockdown my battery died for a week or so, jump started it but it was dead.

replaced it with a new one
12v
cold cranking amps 730
cranking amps 860
amp hours @20 hr rate 90

i also checked the connector for the s mode and it cleaned it

the problem is still there. When I press S mode while in low rage to get M mode it keeps working for 60 seconds and it turn it self off by it self
I need to shift manually

anyone might know what is going on ?

 

It was broken and i changed the plastic housing with new one .. the problem is still there.. don’t know what might be wrong

 

I never did find out why mine would turn off but if you get a code reader to read any transmission codes you might have a few. Maybe it just needs to be cleared

 

@Jankot Can you clarify one thing:

Is it only the M mode that turns off ?
Or both M and S

If it is only the M mode then it could be the Hi/Low indicator switch.

It is easy to replace as you have an 04, and they are available from Bearmach. The switch is on the front of the transfer case.