So I have an interesting theory on my Treg, that I thought I would share in case anyone else has this problem. Kinda of a long explanation, but its important to my supposed problem.
Every once in awhile, when I start my Treg after the temp gets below 40 deg F, whether its 30's, 20's teens, etc. I will get a system fault workshop on the MFI, and my differential dial lights will all flash. It will drive ok, and if I shut it off after a minute or two, it will go away. (I should have a vagcom by next week, so I can clear codes and check them for when it happens again). This only happens when its cooler, and the starter has to crank an extra revolution or so. At the same time, when it happens, it generally resets the cd player to track number 1.
My battery was replaced last year, and I have no problem starting the vehicle, the gauge reads 14 volts when running, and 13 i think when its shut off.
Now for my theory. I know the Treg is susceptible to slight changes in voltages, so I think I figured out why it does this. I live a mile from my work. For various reasons, such as a small child at home and the fact my wife gets home 15 min before I have to be at work, I have to drive. If I could ride a bike I would (maybe not in the winter, but I digress). I also have to take my daughter to 4K 3 days a week, which is like 1/2 a mile. So on some days, I may have 4-5 5 minute trips. I don't think my battery gets enough charging, and it drops the charge enough that it throws an error when starting.
It did it every day this weekend, so Monday, I let it idle for 15 - 20 min outside, since I had no where I needed to go of any distance. Today, the coldest morning so far at about 19 deg F, I had no faults...Fairly unscientific I know, but it is the only thing at this point, that I can think of.
Thoughts?
Every once in awhile, when I start my Treg after the temp gets below 40 deg F, whether its 30's, 20's teens, etc. I will get a system fault workshop on the MFI, and my differential dial lights will all flash. It will drive ok, and if I shut it off after a minute or two, it will go away. (I should have a vagcom by next week, so I can clear codes and check them for when it happens again). This only happens when its cooler, and the starter has to crank an extra revolution or so. At the same time, when it happens, it generally resets the cd player to track number 1.
My battery was replaced last year, and I have no problem starting the vehicle, the gauge reads 14 volts when running, and 13 i think when its shut off.
Now for my theory. I know the Treg is susceptible to slight changes in voltages, so I think I figured out why it does this. I live a mile from my work. For various reasons, such as a small child at home and the fact my wife gets home 15 min before I have to be at work, I have to drive. If I could ride a bike I would (maybe not in the winter, but I digress). I also have to take my daughter to 4K 3 days a week, which is like 1/2 a mile. So on some days, I may have 4-5 5 minute trips. I don't think my battery gets enough charging, and it drops the charge enough that it throws an error when starting.
It did it every day this weekend, so Monday, I let it idle for 15 - 20 min outside, since I had no where I needed to go of any distance. Today, the coldest morning so far at about 19 deg F, I had no faults...Fairly unscientific I know, but it is the only thing at this point, that I can think of.
Thoughts?
Had my service manager look at it and it was fine, told me it needs to get driven over 35 mph for a few minutes to sustain a good charge. I understand that the alternator doesn't go into secret squirrel mode at 35mph, rpms and load bring to many variables. I will say that after she (happily) started making a run by Starbucks or the post office which adds 3 miles, no issues.
