[tonys555]

Apologies for posting problems that I'm sure have been answered, but I'm using an iPhone to post/read. My parents are replacing their internet provider, and I'm here to supervise....

I have a 2005 Saab 9-5 Aero.Automatic Tranny with useless manual shifting paddles. A few weeks ago, my backup lights, cruise control, parking sensors all failed - or starting acting weird.
The cruise control light comes on when I activate it, but there is no cruise control.
My back-up lights stopped working.

The parking sensor works - all the time. Forward, reversing, at speed, etc.
All fuses and relays check out, and I'm at a loss.
Can these problems be connected?
Once these are fixed, I have other problems to figure out (passenger seat heat heater too hot, funny surges under acceleration, hard to start when cold) but I'll have internet access in a few days. Any help would be appreciated.
Thank you

 

[bob3000]

For the tail lights and parking sensors check the wiring harness in the trunk where it flexes as the truck lid is raised and lowered it is a known failure point.
.

 

[shaggy]

if there are so many problems that seemed to appear at the same time or close to it, i'd swap out your battery with a known good one and see what happens. these cars are sensitive to voltage and a weak battery can cause all sorts of fun things.
good luck
s