viper alarm problem

Hi everyone, have just been reading the forums and PMed a member who looked to have some knowledge about alarms, but thought I may as well post it here as well. I have a Viper 460XV alarm installed which has ultrasonic sensors installed on the a pillar. It seems usually after i park up and arm the alarm anywhere from almost immediately to 30 mins(usually within the first ten minutes) the alarm will trigger, and when i disarm it the status LED reports that its my ultrasonics which are triggering. I was told by someone with the same make alarm it may be the warm air from the heaters cooling causing it to trigger, and I have noticed if i drive the last ten mins of my journey with the air con on it is less likely to trigger, but not always, and this is a pain. I have also tried turning the sensors sensitivity down using the remote, out of 20 settings the default is 10, i have set it to 5 and it still does it, I havent attempted to turn them down under the dash yet however. Could you shine some light on this issue please? I'm thinking of installing a 508d proximity sensor and turning the ultrasonics right down, if this is possible, but would prefer it to work as is if poss? Thanks

Yes, what car is it. I assume you're writing from the UK, well so am I and I have one question, where are the sensors fitted? Top or bottom of the A pillar? I never install them.

Yeah I'm writing from the UK mate, its a Toyota Starlet Glanza V, and the sensors are fitted at the top of the A-pillar. The alarm was fitted a few months before i got the car at a professional dealer. Hope this helps :) Thanks

Remove as in throw away the u/sonics and install a 508d.

Really? I'd say the alarm was under a year old(will confirm when i check the receipt) and the guy i bought it from said it was never a problem to him, but he did keep the car garaged and hardly ever drove it lol. Seems a bit pointless having them if they are crap? I hear theres a control module for the U/s sensors in the dash I can adjust as well as on the fob? Should I try these or just go for the 508D? Don't really wanna void my cat 1 status so could i turn the U/S down to 0 or 1 maybe? or would i still get trouble from them? Thanks

I've never installed a 460 or 480 with ultrasonics, I've always used a 508d and it won't affect the certificate. 460 and 480 u/sonics plug directly into the unit, no physical adjustment. The only physical adjustment is on the 509U add-on u/sonic.

Ah I see, well my insurance isn't affected by the alarm so its not too important anyway, well I don't exactly have anything that resembles a certificate but have a bit written out receipt with a sitcker and signature on I assume is similar to the certificate? Basically I just wanna ensure the car is gonna be secure enough with just the microwave 508D item, or should I get any more sensors? Is it hard to fit and set up? Also if say i fitted the 508D would setting the ultrasonics down to 1 on the remote be beneficial or would it be better with them completely removed? Is there a particular reason for them messing up and the a/c affecting them? Sorry for all the questions but thanks a lot for your help, i've asked this questions on so many car forums i'm on but no real help. How hard would it be to add some features such as boot pop and mirrors to fold in when the car is locked?And maybe remote start? Theres only one aux port in use that I know of which is to hold the lock and unlock buttons for turbo timer.

What you have is simply a receipt, no insurance company/broker would accept that, get the installers to issue you with the proper embossed certificate. Ref trunk pop, changing the linkage from mechanical to electronic isn't so difficult....for me, I've done it on an Almeira and a pair of Glanzas. If this was installed by a firm in Harrow that moved to Watford, I know them and wouldn't let them change a light bulb! I've done mirror fold on them as well, some parts needed. The idea is to remove the u/sonics completely, what's the point if you have a 508d giving you exterior warn away anyway? Ref r/start, done that as well but I would have based it on a Clifford Con 650 MkII which has the add-on intellistart, manual transmission capability. The 460 is vastly inferior to the 650. Where are you in the UK? I'm in North London.

I do apologise I do actually have a printed receipt stating what components were installed, as well as an installation certificate which has a header saying Armourauto or something along those lines, it has 3 copies stuck together(that type of paper which writes through onto the next, it is filled out by hand and has the car, alarm, and installation technicians details as well as a stamp area although this just has the company business label stuck onto it....but I assume thats a correct certificate? The company was called John Kleis car audio according to the certificate and receipt, I hope those aren't the ones you are talking about? I'll probably leave the other items for now, I may add them in future, the boot popper especially. I'm up in yorks unfortunately mate :(

P.S. I meant to say, where is a suitable place to buy the 508D from? Cheers