trans failsafe demon

[stefg]

Hi there,

I have a 2006 3.0i E53 and last weekend I had the "Trans Failsafe Prog" indicator light up along with going into limp mode. I was driving a 2 lane highway and hit the accelerator to overtake a semi. about 10 min later is when the TFP indicator lit up. I was out town so I took it to the nearest dealer. told me I had a crack in my air boot. replaced that and cleared the faults. running like a champ the rest of the day, then later that night it went back into TFP limp mode. so back to the dealer the next day. they tell me they cant duplicate the issue after clearing the fault. I think im good at this point. I make a 200mi trip back home with no issues. 2 days later im pulling out of work, as I come to a complete stop at the light... DING "TRANS FAILSAFE PROG"

started checking the forums and looked into a possible battery, alternator, VR problem. no issue there. I did have something funky happen with my brake lights earlier that day during lunch. "Check Brake Lights" lit up. took a look and the left were out, they didn't appear blown but changed them anyway. as soon as I get back to the office the "Check brake lights" is lit up again. take another look and this time the rights are out.

any ideas? are they separate or related issues?

thanks,
Stef g