S-Tronic Owners: Gearbox Malfunction
08-24-2010, 11:57 AM
#1
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S-Tronic Owners: Gearbox Malfunction
Just to give you guys a little info if you encounter a gearbox malfunction notice. First off, my car was built in Oct '09 and has 14K miles on it. A couple of days ago I was pulling out of a parking lot and I hear a chime and get a "Gearbox malfunction, you can continue driving" notice in my display then it went away. It happened again about 4 hours later, but the car still felt normal.
I took my car to the dealer the next day and found out my transmission was overheating, causing the light. But the tech didn't understand why the transmission was overheating. Of course I was asked, do I have any mods on the car or was I driving the car very hard up and down mountain roads when I got the malfunction. I told them no and they sent the downloaded information to Audi. The next day I was told Audi recommended replacing the mechatronic since the car is still under warranty.
I currently live in Italy and was told it could take 3 weeks to get the part in. Needless to say I wont be driving the car much, even though there are no driveability issues.
Kudos to Audi for wanting to make things right the first time...that mechatronic costs 1100 euros. Hopefully the wait wont be so long. I'll keep you guys posted.
I took my car to the dealer the next day and found out my transmission was overheating, causing the light. But the tech didn't understand why the transmission was overheating. Of course I was asked, do I have any mods on the car or was I driving the car very hard up and down mountain roads when I got the malfunction. I told them no and they sent the downloaded information to Audi. The next day I was told Audi recommended replacing the mechatronic since the car is still under warranty.
I currently live in Italy and was told it could take 3 weeks to get the part in. Needless to say I wont be driving the car much, even though there are no driveability issues.
Kudos to Audi for wanting to make things right the first time...that mechatronic costs 1100 euros. Hopefully the wait wont be so long. I'll keep you guys posted.
08-24-2010, 12:54 PM
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from what i have read about the stronic transmission it seems it will overheat at certain hill grades... being in italy u probably encounter a good amount of hills and if u are parking on some the oil may not be doing all its job and building in certain areas...
08-24-2010, 01:10 PM
#4
I've driven my s-tronic on some of the steepest public roads anywhere in the country (Pikes Peak, Mt. Evans, I-70 W) at all speeds and in traffic jams and this simply isn't true.
08-24-2010, 01:42 PM
#6
AudiWorld Super User
More reading for those interested:
http://www.audizine.com/forum/showth...-tronic-(DL501)
http://www.audizine.com/forum/showth...-tronic-(DL501)
Gearbox protection functions
Control unit temperature monitoring
High temperatures have a negative impact on the useful life and performance of electronic components. Due to the integration of the gearbox control unit into the gearbox (lubricated by ATF), it is very important to monitor the temperature of the electronics and, accordingly, the ATF.
When the temperature reaches approx. 135 °C ( measured by one of the two temperature sensors in the gearbox control unit), the gearbox electronics must be protected against a further rise in temperature.
When this threshold value is exceeded, the gearbox control unit initiates a reduction in engine torque in order to reduce heat input. Up to a temperature of approx. 145 °C, engine torque can be reduced gradually until the engine is at idle.
When the engine is at idle, the clutches are open and there is no power transmission from the engine to the drive wheels.
When the protective function is activated, an entry is made in the fault memory and the following text message is displayed in the dash panel insert: "You can continue driving to a limited extent".
Control unit temperature monitoring
High temperatures have a negative impact on the useful life and performance of electronic components. Due to the integration of the gearbox control unit into the gearbox (lubricated by ATF), it is very important to monitor the temperature of the electronics and, accordingly, the ATF.
When the temperature reaches approx. 135 °C ( measured by one of the two temperature sensors in the gearbox control unit), the gearbox electronics must be protected against a further rise in temperature.
When this threshold value is exceeded, the gearbox control unit initiates a reduction in engine torque in order to reduce heat input. Up to a temperature of approx. 145 °C, engine torque can be reduced gradually until the engine is at idle.
When the engine is at idle, the clutches are open and there is no power transmission from the engine to the drive wheels.
When the protective function is activated, an entry is made in the fault memory and the following text message is displayed in the dash panel insert: "You can continue driving to a limited extent".
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08-24-2010, 04:01 PM
#8
08-24-2010, 05:08 PM
#9
AudiWorld Super User
Yea, I am missing this also. I drive uphills a lot, in stop and go, and have been in the car doinga steady roll up from sea level to 3800 ft over about 30 minutes and never had any issues. I think either the temp sensor is bad in this one or the oil is low for some reason.
