I believe they are self correcting or adjusting. I had some new tires installed and one sensor kept coming on and eventually went off in about 10 days.

 

Yeah - that's what they said, but I drove about 35 miles home and it was still on so I started to doubt this story and I didn't have this problem when the dealer put on new tires about a year ago.

 

You can always try the "Magic Saab Reset Button" (unhooking the battery for about a half an hour....) :cheesy: wouldnt hurt

 

lol - yeah that would probably do it.

 

Self healing sensor! 28 hours later and it fixed itself. whooo-hooo!

 

Three of my four tires lit up this morning(LF, RF, RR). Guessing the extreme cold really got to them last night. One tire was at 30 and the others were about 32 according to the gauge I was using. I also checked the fourth tire and it was at 33.

Now that all tires are at the same pressure (35psi), I still have two that indicate as low. The left front reads ok now(after a mile or so of driving), but the right two tires still have not turned off and the front right even has a "+" next to it until I hit the "clr" button. Not sure what that's about.

Was going to look over the manual, but that's out in my freezing car. Being it sounds like they auto reset, I guess I'll just let them go. Tomorrow I'll be taking readings with our TPMS tool in the shop, just to see what the sensors see the pressures as. Sure wish it would tell me on the SID, extremely convenient feature most higher end GM vehicles have(even some of the lower models). Wish Saab would have used that idea in the TX. Kind of a guessing game otherwise, unless you know you have an accurate gauge.

 

The "+" symbol is to indicate there is another SID warming that needs to be displayed. Chances are uu had 2 low tires, when uu hit clear the display brings up the warning for the next tire.

 

It takes about 20 minutes of driving or so and the sensor will reset itself.

 

Thanks, now the "+" makes sense. There were two low tires at the time, and three at first. Must have overlooked the plus sign the first time though.

Good to hear these cars auto relearn the sensors. One less thing I need to worry about having a special tool for. I guess some cars don't even need a tool, but still one less thing to have to mess with.

 

What Sux about the TPMS in the Saab is that it doesn't show the actual pressure #'s, in a $47,000 convertible I would think this should be standard. My jeep EVIC showed a Jeep animation with #'s next to each tire. That's not so hard where a technological car like a Saab can't do this.

 

Our 2005 Chrysler T&C that has TPMS also does not show the actual pressure in the tires either. What makes that funny is at work we have a 2009 Chevy full size van that has TPMS that does show the pressures. Makes me wonder what the hell GM was thinking with the SAAB system...

I wonder if a third party makes a receiver that can pick up the signal from the TPMS sensors and display the pressure and do the Saab sensors even send that data?

 

I've looked into finding something that picks up sensor data and displays it, but have found nothing.

The sensors send pressure data and temperature data. All TPMS sensors do this (2008+) and there are handheld tools you can get that read that data.

 

all this thread is why I hate the TPMS "sensors" on these cars. They're idiotic. Thank heavens for the t2 group buy, which is the first thing I did (delete the sensors)

 

Me too, hate TPMS

It is just another thing to annoy the hell out of me.

Had a friend with a Tech II turn the dumb thing off.