Past few weeks I've been having a problem with my tilt sensor (i think its the 507T). Its seems to be setting off the alarm for no apparent reason. Its an intermittent problem, cant reproduce the problem on demand. I know its the tilt because its tied into my trunk sensor, since my hatch isnt open, when the alarm is going off, its narrowed down to the tilt sensor.

It was installed almost over a month ago. Brought it back to where it was installed, of course the problem couldnt be reproduced so he couldnt really diagnose it. it was on the highest sensitivity, turned it down to the medium setting, and it repeatedly went off today while I was at work. As soon as I rearm the car, few seconds later, goes off again.

Can I get some opinions as to how fix the problem or find out what is causing the problem? Thanks in advance!

 

Do you have the motion sensor turned on? You could have problems with RF interference.

 

You say it's "tied into my trunk sensor" I assume the trunk sensor is the trunk/hatch switch, I would want to know if when they installed it and wired it to the "trunk sensor" input to the alarm, that they were isolated from each other with diodes, it may be the problem, anytime two or more "triggering" devices are connected to the same input to the alarm, they should be isolated from each other by diodes, at the very least the tilt sensors trigger output. [neg. (-)] should have a diode on it.

Also, what kind of alarm is it, does it not have an input for extra sensors? 94

 

I dont the actual proximity sensor. This sensor basically checks to see if someone is raising my car to steel my rims or tow the car or shaking the car.

 

From what I know about the 507T it has a motion sensor built into it also.
http://www.drdetailshop.com/507t.htm

How is it detecting motion? Would need to be damn sensitive. I would try to shut the motion sensor off.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote">You say it's "tied into my trunk sensor" I assume the trunk sensor is the trunk/hatch switch, I would want to know if when they installed it and wired it to the "trunk sensor" input to the alarm, that they were isolated from each other with diodes, it may be the problem, anytime two or more "triggering" devices are connected to the same input to the alarm, they should be isolated from each other by diodes, at the very least the tilt sensors trigger output. [neg. (-)] should have a diode on it.

Also, what kind of alarm is it, does it not have an input for extra sensors? 94</TD></TR></TABLE>

Yes, I mean the hatch switch. They did add diodes to protect the sensors. The alarm is a viper 791 xv, two way pager.

There is a setting on it for sensitivity for angle triggering and motion detecting (not proximity). They were on the highest sensitivity when first installed, never had a false alarm problem till recent. After the nuisance alarming, I had the senor on high sensitivity for the tilt (which is a one degree trigger), and medium motion detecting. Still had the problem. Yesterday I left it on medium motion, and turn it to a 3 degree tilt trigger. Hasnt gone off since, but then again the problem was intermittent to begin with. The thing that bugs me is when we tested the sensor after it was put in, it took a lot to set it off. Me and the installer had to pull up on the front and rear fender to set it off. So that leads me eliminate strong winds or maybe a small bumping on the car cant set it off through that sensor. I have seen the car do the nuisance alarming, I saw nothing on the outside of the car that couldve triggered it. Maybe the tilt sensor itself moved, its not tied down, screwed down or anything, but it shouldnt matter, the sensor learns the stable angle when its armed. So its almost impossible to tell what is setting that tilt sensor off.

If the problem continues, I'll keep decreasing the sensitivity. If it still persists I can turn off the motion part of the sensor but not the tilt. If it still persists, there has to be a problem with the sensor. This is soo annoying! hehe! if anyone has suggestions please dont hesitate to let me know. thanks again!

 

hmm...i didnt think that the "motion part" of the sensor was actually detecting motion around the car. did that make sense? hehe! with my old clifford ag3, i had the proximity sensor, so when someone reached into my car through an open window it the alarm would go off.

Is that "proximity senor" for my old clifford alarm, the same as this sensor?
i checked that link out and it says it. youre probably right. i wish i could contact a viper rep and find out for sure. thanks for that info!

 

I don't think it is a proximity detector after reading further. I think it detects motion by vibrations through the chassis of the car. which would need to be very sensitive in order to pick them up. I would still shut it off and just stick with the tilt sensor.

 

The proximity sensor your talking about is the 508D. The 508d uses an RF field to detect motion within the set range of the RF field. The 507t records both horizontal and vertical intial angles when armed. If these angles change by more than the allowed set tollerance the device is triggered. The 507t though detects motion of the vehical does not detect motion around the vehical as does the 508D.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MLD211 &raquo;</TD></TR><TR><TD CLASS="quote">The proximity sensor your talking about is the 508D. The 508d uses an RF field to detect motion within the set range of the RF field. The 507t records both horizontal and vertical intial angles when armed. If these angles change by more than the allowed set tollerance the device is triggered. The 507t though detects motion of the vehical does not detect motion around the vehical as does the 508D.</TD></TR></TABLE>
It still comes down to how are they detecting vertical and horizontal movement?
gyro? I dont know I haven't taken one apart. If it uses RF of any kind it could be picking up interference. Contact DEI. Or try palcing the thing in something metal and ground the metal. Where do you have it installed on the car?

 

I'm having a hard time tryin to find an email addy or phone number to a viper sales rep. Im sure that person will know.

I had it installed at a local car audio/security system place.

I told him i was still having problems. he said to unplug the sensor all together and see what happens. I'll try it, im sure if that will fix it. hehe!
i guess it'll help narrow down the problem, if its something the brain is doing or a malfunction with the sensor.

 

Here the scoop if you have 1 of those TILT sensors EXPECT it to false period. there is no way around it. it's just random. but 1 thing does help tho mount it away from any heat source such as the floor pan near the firewall or heater core. I Don't care what the tech. support people say those tilt senors always randomly falses.

 

check all the dip switch settings on the sensor. make sure that they are all set to the off position.

 

Are you saying they told you to disconnect it yourself

Are they a DEI dealer?

Do they not have any kind of warranty on their installs?

I would definitely get ahold of DEI http://www.directed.com/contact/default.asp.

Now the questions are, is the alarm a DEI, did you get the alarm, [if it's a DEI] and/or the 507T at an authorised DEI dealer and again was the place you had it installed an authorised dealer?

I have installed a few of the tilt sensors, on both DEI and other alarms, and when installed properly and adjusted properly have not had any problems with them, I adjust them so you have jack the car up enough to remove a wheel, I have readjusted and/or remounted some that have been set so sensitive that a small gust of wind would rock the car enough to trigger the alarm. I have also, as I mentioned before, installed diodes, anytime more then one sensor/trigger is using the same input to the alarm. 94

 

The sensor definately has to be mounted. On the sensor case it says "mount this side facing down" (those aren't the exact words) and in the instructions it tells you to secure it down with screws. If it's not that, I would check the wiring. Where is it getting power and ground? Even if the wiring looks good, you can probably solve the problem by doing it over. Especially if they used scotch locks, insulated butt connectors, or some other crap. Look over the sensor wires to see if the insulation got scraped off or pinched against sheet metal when it was routed. You say it was diode-isolated but the symptom you describe says otherwise. Verify that it was and that the stripe is facing toward the sensor.

No the 507T does not use an RF signal. It's a mercury tilt switch AFAIK (don't quote me on that). Yes it is most likely the same sensor on your Clifford alarm because Viper and Clifford are identical alarms in different packaging both put out by DEI.

I have a 507T on my Omega alarm with two motion sensors and a glass breakage sensor. It's been working fine for two years.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WickedKP &raquo;</TD></TR><TR><TD CLASS="quote">Here the scoop if you have 1 of those TILT sensors EXPECT it to false period. there is no way around it. it's just random. but 1 thing does help tho mount it away from any heat source such as the floor pan near the firewall or heater core. I Don't care what the tech. support people say those tilt senors always randomly falses. </TD></TR></TABLE>

are you referring to the tiltsensors that have a ball of mercury inside of them? Just asking

edit - I just ordered some of these for another project of mine. I would use the source code to link directly to the picture but im on a school computer and it SUCKS

http://www.imagesco.com/catalog/sensors/tilt.html


Modified by B18EG6 at 12:46 PM 11/2/2005


Modified by B18EG6 at 12:46 PM 11/2/2005

 

Maybe that's what they look like internally. I don't know because I don't take apart anything that has mercury in it.

A tilt sensor on a paging alarm will alert you when your car is being towed legally or illegally. But a tilt alone isn't that useful for protecting rims. If you want to protect your rims, get yourself a motion/proximity sensor. DEI's 508D sucks. Get the Crime Guard/Omega AU94T from Crutchfield. I have had two of these for around 2 years, after fine adjustments, this sensor works perfectly. If there's a false alarm, it's cuz some fat bitch is doing jumping jacks next to your car in the shopping mall parking lot. In that case it's not really a false alarm, I want her to back her big *** up. beep beep beep beep

This is how they steal your rims. The put blocks under your jack points, then flatten the tires. Then they take vice grips or a small socket hammered onto your locking lug nuts. With the car sitting on the blocks, you can pull the rims right off without the car moving enough to set off a tilt sensor unless it is very sensitive.

The 507T has been replaced by the 507M.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suspendedHatch &raquo;</TD></TR><TR><TD CLASS="quote">This is how they steal your rims. The put blocks under your jack points, then flatten the tires. Then they take vice grips or a small socket hammered onto your locking lug nuts. With the car sitting on the blocks, you can pull the rims right off without the car moving enough to set off a tilt sensor unless it is very sensitive.</TD></TR></TABLE> And that is why you would have the added layer of a properly installed and adjusted shock/impact sensor, or I guess I should say the "tilt sensor" is the added layer as most alarms now come with a dual stage shock/impact sensor. 94

 

I would be really surprised if they used mercury but I don't know enough about that sensor to claim otherwise.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxxtreme &raquo;</TD></TR><TR><TD CLASS="quote">I would be really surprised if they used mercury but I don't know enough about that sensor to claim otherwise.

</TD></TR></TABLE>

I wasnt trying to start controversy, however on my viper 550esp the hood tilt sensor uses mercury (I got this alarm about 5 years ago, I dont know if its any good or not... is it? )

 

I am willing to bet they dont use mercury switches because if you park on a hill the sesors would be useless. I would imagine it would be some kind of device with a free swinging arm similar to a clock that when armed would remember the position it was it and if the position changed the device would trigger. Now this is all speculation but its the best scenario I could think of.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote"> Are you saying they told you to disconnect it yourself

Are they a DEI dealer?

Do they not have any kind of warranty on their installs?

I would definitely get ahold of DEI http://www.directed.com/contact/default.asp.

Now the questions are, is the alarm a DEI, did you get the alarm, [if it's a DEI] and/or the 507T at an authorised DEI dealer and again was the place you had it installed an authorised dealer?

I have installed a few of the tilt sensors, on both DEI and other alarms, and when installed properly and adjusted properly have not had any problems with them, I adjust them so you have jack the car up enough to remove a wheel, I have readjusted and/or remounted some that have been set so sensitive that a small gust of wind would rock the car enough to trigger the alarm. I have also, as I mentioned before, installed diodes, anytime more then one sensor/trigger is using the same input to the alarm. 94</TD></TR></TABLE>

Yes they told me to disconnect it myself. hehe! I mean he dint say that to be a permanent fix, just to narrow the problem down to it being the sensor.

They are a DEI dealer and do have warranties on their work.

Alarm is DEI, its a viper 791xv two way paging. A friend of mine who used to work at a DEI dealer installed the alarm. This other place installed the tilt/motion sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suspendedHatch &raquo;</TD></TR><TR><TD CLASS="quote">The sensor definately has to be mounted. On the sensor case it says "mount this side facing down" (those aren't the exact words) and in the instructions it tells you to secure it down with screws. If it's not that, I would check the wiring. Where is it getting power and ground? Even if the wiring looks good, you can probably solve the problem by doing it over. Especially if they used scotch locks, insulated butt connectors, or some other crap. Look over the sensor wires to see if the insulation got scraped off or pinched against sheet metal when it was routed. You say it was diode-isolated but the symptom you describe says otherwise. Verify that it was and that the stripe is facing toward the sensor.

No the 507T does not use an RF signal. It's a mercury tilt switch AFAIK (don't quote me on that). Yes it is most likely the same sensor on your Clifford alarm because Viper and Clifford are identical alarms in different packaging both put out by DEI.

I have a 507T on my Omega alarm with two motion sensors and a glass breakage sensor. It's been working fine for two years.</TD></TR></TABLE>

They say to mount it to the floor, but I dont want to drill hole in the floor. I have really strong 3m double sided tape that should work well.

Not sure where its getting power, but its grounded to a signal which is ground only when armed (i think). i forgot the wording. its grounded that way so it learns the angle when i park everytime time i arm it.

The proximity sensor on my clifford, did not look like this sensor. The prox sensor on my clifford was basically a loop antenna looking sensor. That was def. an RF sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeRod &raquo;</TD></TR><TR><TD CLASS="quote">
The proximity sensor on my clifford, did not look like this sensor. The prox sensor on my clifford was basically a loop antenna looking sensor. That was def. an RF sensor.</TD></TR></TABLE>

Lol the loop antenna is just that, an antenna for your alarm its not an RF sensor.

Prox sensor on clifford is usually a small square black box.

 

hehe! im an idiot.