Question about Passport 8500 Radar Detector

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What's the fix?

8500 going off laser every 2 minutes.

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  • Anonymous Sep 26, 2008

    I have the exact problem.... but mine just started doing this, cant find a solution yet. Ive reset the unit but that didnt work.

  • Anonymous Oct 09, 2008

    same problem


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OK.....this is strange. I have the same problem with constant false alarms switching between POP and KA for five to ten minutes constantly. I tried the Q tip recommendations from this site and no luck. Here's the weird part, when pluged into my 2006 Lexus GS the problem continued. When I plug it into my new used car a 2006 Mercedes CLK it works perfect! So, my conclusion is it must be a combination between the dector and the Lexus that causes the problem. I'm confused because it took over a year and a half for the problem to start in the Lexus. I plan on calling Escort tech dept. to see what the heck would cause this.I'll post the results from the call afterwards.

Posted on Oct 19, 2008

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Laser alarm gos off when accelerating

This is a common problem with the older units, the Laser horn gets dirty and out of alignment causing this issue. You can send the unit in for repair or try to fix it yourselfe

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Hold all three buttons down and reset it.hope it fixes the problem!!


Jul 19, 2008 | Passport 8500 Radar Detector

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Getting false laser readings, any adjustments?

This is fixable as described in other threads here. This is annoying and seems to be random, though it also does it sometimes when the wipers are turned on or I use the windshield sprayer. 2 minutes with a smal Philips screw driver and a Q-tip will fix it. I just did mine and it works great now.

Unscrew the three screws, pop the three components apart (it really is a no-brainer since they only fit back together ONE WAY, so don't be nervous. There is not anything that is going to fall apart or spring into a hundred pieces in there.

I used canned air to blow everything out and just used the Q-tip on the front window and the parts that looked like the detector window internally... I didn't bother swabbing all of the board.


Apr 27, 2010 | Passport 8500 Radar Detector

1 Answer

When I accelerate from either a dead stop or if I increase my speed as I'm driving, my lazar alert goes off when there's no threat.

Scroll down a few posts and a guy "blokhead" posts the solution to the "laser" problem. And then another posts some pictures. I only took out the first 3 screws, opened it up, pulled the circuit board out, and then used a tiny screwdriver to seal up the gaps around the metal box around the laser sensors. I also tightened up some of the tabs that hold the box to the board. It definitely had some little gaps that had opened up over time causing RF interference. The guy says if he ever fixes it again he may use some foil tape to completely seal it, I might do the same, but it appears to have fixed the laser issue when you press the gas, and an issue with my keyless remote lock. It would laser everytime I left it on and locked/unlocked the car.

Oct 08, 2009 | Passport 8500 Radar Detector

1 Answer

I also have a 8500 passport that flashes laser and will go off

Does this happen in the city or does it happen when you are out in the middle of nowhere? I have seen laser detectors that are falsely triggered by various lighting devices that contain wavelengths of light similar to those used in police laser.

If this is annoying and you dont want to hear it, you can locate the receiver element that detects the laser signal and cover it up with a piece of black electrical tape. That should stop whatever is causing your problem unless there is something actually broken inside the unit.



Aug 21, 2009 | Passport 8500 Radar Detector

1 Answer

Getting false alarm from laser. Laser alarm keeps

If the laser continuously falses even with the car's ignition turned off, then your radar detector has an internal electronics problem. If your radar detector frequently or nearly continuously falses for laser while you are driving even in the middle of nowhere, then most likely the cause of the problem is either poor power and ground connections or electrical noise within your vehicle's electrical system. Jump over to for help in resolving these issues.

Mar 15, 2009 | Passport 8500 X50 Radar Detector

1 Answer

Laser problem with radar detector

This is caused from voltage fluctuation. Your car will draw down power from the radar detector and it goes off. Passport/escort need to come out with an inline voltage conditioner. Maybe soon.

Aug 27, 2008 | Passport 8500 Radar Detector

1 Answer

Laser warning - Multiple false alerts

Although the detector could have internal problems, it is possible that it is coming from a real source.
A route I took between home and business triggered mine along the same stretch every time I passed it and after looking a a map and comparing it with the stretch I drove, I found that the Marine airbase at Miramar California was visible (line-of-sight) between two mountains only along that stretch.

Note if the falsing happens at about the same point each time.
I just learned to ignore the laser alarm if it triggered during that 1-2 mile 'window.'

Jul 11, 2008 | Passport 8500 Radar Detector

14 Answers

Laser warning going off all the time

Hi All,
I fixed my Radar, No Manufacturer help, no cost to me at all. I got advice from a forum member on a satellite forum I belong to. So what I did was I took apart the radar. Watch carefully how it comes apart so you can reassemble again after. Get a Dry Q-tip (ear swab) leave it dry so you do not end up leaving and residue on the diodes etc. Start by cleaning the horn, wipe the electronic board all over gently with the Qtip , blow ou the diffusion screen (leave the spit in your mouth). After all that I did not see a spec of dirt on the Q tip I used..there was no sign of dirt, residue but whatever I did do fixed the problem. I have been using it for three months and not one false alarm from the laser mode.

Good luck all......

May 30, 2008 | Passport 8500 Radar Detector

1 Answer

Laser is always going off. more so when it rains

Mine had a similar problem. Except it was Ka going off almost constantly. Luckily I was able to fix it, maybe it will work with laser constantly going off.

1. Disassemble the unit (there are 3 screws on the bottom)
2. The plastic casing will be free now to be pulled off.
3. Now you have the complete circuit board, you want to remove the metal channel casing that covers the rear part of the board. I believe there were 5 or so screw on the bottom you will need to get with a precision screw driver.
4. Once the metal cover is removed clean everything thoroughly with a q-tip. In my case the gold plated channel the metal case covered has some spots that were dirty and once that was clean I haven't had any other problems.

Jan 09, 2008 | Passport 8500 X50 Radar Detector

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