jayi836

Just replaced my PCM2.1 with an Alpine iLX-207 HU and the HUR NAV-TV210, 2008 997TT with the Bose Amp.
Now I have my seat-belt chime coming on at 76MPH and off at 71 MPH WTH!!!
Anyone have any thoughts I have a Durametric Pro and went into the instrument cluster and turned all the chimes off.
Another interesting thing the car is equipped with the Sports Chrono it hasn't worked since i purchased the car in August 2018 now it does work.

ronvanr

Could this be coming from your new head unit. I know some of the newer head units will give you a chime if you exceed the speed by a certain amount. Have you checked the limit indicator on the dash to make sure it's turned off. I have my limiter set for 65 mph, but it only chimes once when I exceed the limit.

jayi836

I pulled the Alpine and drove with the stock PCM an no PCM, no change. Must be a malfunction of some kind.
I also removed the factory XM, 6CD changer and NAV system don't think it has any affect as its fiber optic and power. Looped the Bose amp back in.

Hella-Buggin'

Is it possibly the speed alarm got activated at 75mph in the PCM settings. When I bought my car is was set at 80mph but I deactivated it.

jayi836

That's a good observation, I barely used the PCM as it it very dated interface,however I had no chime before I replaced it with the Alpine unit.

Do you have a pic of where to find it I can reinstall the PCM once again.

jayi836

SOLVED!!
Reset the ECU and all good now.

Jedi

I have an alarm that comes on as well at 75 MPH, what is the procedure for resetting the ECU

Thanks

jayi836

I believe it's under instrument cluster like resetting the service light, I was using the durametric pro. PM me if you still need help.

Jedi

Thanks

I have a Durametric Pro, I’ll have a look, hopefully I can solve the problem