Flashing blue light?

Yes it is a KARR system

 

Here's a link for the KARR manual.
http://mikehmayer.com/stuff/xB/KARR%204040a.pdf

 

Thanks for the link to the pdf manual. I saved it with my other pdfs. The KARR has a few more "bells and whistles" than the OEM system so I accepted mine when the dealer said it would be a major effort to extract it. In fact, they would have had to have a tech from KARR come out to do it. I just caved and took the system. I wish it had the TRACK feature, but really, what is the risk here of a theft? Maybe if gas got up to $7 a gallon we could worry.

 

That's by design. The KARR system has motion and shock sensors so if someone bumps the car a bit, it will send out warning "chirps". If hit hard enough, the alarm goes off. My car even chirps if there's loud thunder.

 

Is it 4 short chirps from the horn, or 2 beeps from the horn? The chirps are the motion/shock warning sensors but the 2 beeps would be the unlocking function. If you are getting chirps with no obvious motions then it's possible the sensors are shorting. If it's 2 beeps from the horn, maybe your remote(s) are sending the unlock signal. Sometimes buttons on remotes depress inside a tight pocket.

If you think the system has a problem - unfortunately KARR will only make house calls to diagnose and then repair...there is no KARR shop to go to. I almost had to do this and they quoted me about $100 to make a house call. They can be reached at (877) 909-5277.

 

step away from the car...

 

Probably the "neon" lights. lol

 

Just put it in Valet mode which is essentially disabling it:
Valet mode – with Prius on, press and hold for 5 seconds until solid blue LED

Other programming options:

Make sure Karr is disarmed (no LED lights)
Turn Prius on
Press and release Karr button 3 times
Short LED light with 1 short horn
Before 3 seconds, turn Prius off
Horn will give a short-long chirp
Within 3 seconds, turn Prius back on (now in programming mode)
Horn will give a long-short chirp
Press Karr button one time per option (there are 4 options) the Karr LED will flash the number of times per option you are on.
Option 1 (one flash): wait ½ second and horn should chirp once (auto-lock with ignition on)
Option 2 (two flashes): wait ½ second and horn should chirp once (auto unlock with ignition off)
Option 3 (three flashes): wait ½ second and horn should chirp twice (passive arming and lock without lock)
Option 4 (four flashes): wait ½ second and horn should chirp twice (active arming)
Turn Prius off to exit programming.
Get out and arm…LED should flash.
Wait a bit and then attempt to disarm with fob.
Valet mode – with Prius on, press and hold for 5 seconds until solid blue LED
Valet mode off – within 3 seconds of Prius on, press and hold until LED off​