Author Topic: Key Fob: RF Signal to the ECU??  (Read 312 times)

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Offline ghostrider990

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Key Fob: RF Signal to the ECU??
« on: May 01, 2018, 03:47:33 pm »
Sorry for not searching.....

Ive been having a weird issue with my Radar detector lately (BelRX65), and trying to locate the source of error.

I mount the radar on top of the clutch lever, and also keep my iphone nearby(tankbag) during operation.

Also, I run a Garmin Zum590lm between the handlebars.

I have been getting non-stop Ka band (instant on) falsing alerts lately, that won't seem to go away.

But it only does it (the radar falsing) on the bike, and NOT in my car.

I don't remember what the FOB operates on, but assume it's RF??

Just trying to eliminate all issues, and see what's causing the problem.

thanks,

***MOB has t-minus, five....four....three.....two.....********

gr
« Last Edit: May 01, 2018, 03:58:46 pm by ghostrider990 »
..."I like to keep this handy -- for Close Encounters"...

Offline kv5e

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Re: Key Fob: RF Signal to the ECU??
« Reply #1 on: May 01, 2018, 04:07:00 pm »
Sorry for not searching.....

Ive been having a weird issue with my Radar detector lately (BelRX65), and trying to locate the source of error.

I mount the radar on top of the clutch lever, and also keep my iphone nearby(tankbag) during operation.

Also, I run a Garmin Zum590lm between the handlebars.

I have been getting non-stop Ka band (instant on) falsing alerts lately, that won't seem to go away.

But it only does it (the radar falsing) on the bike, and NOT in my car.

I don't remember what the FOB operates on, but assume it's RF??

Just trying to eliminate all issues, and see what's causing the problem.

thanks,

***MOB has t-minus, five....four....three.....two.....********

gr

The FOB/ECU  handshake is extremely low power packet data at 315 MHz.

The duty cycle is very low, try the RX65 without the GPS installed.

Craig
South Central Area Director

Offline MAN OF BLUES

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Re: Key Fob: RF Signal to the ECU??
« Reply #2 on: May 01, 2018, 06:37:10 pm »
Sorry for not searching.....

Ive been having a weird issue with my Radar detector lately (BelRX65), and trying to locate the source of error.

I mount the radar on top of the clutch lever, and also keep my iphone nearby(tankbag) during operation.

Also, I run a Garmin Zum590lm between the handlebars.

I have been getting non-stop Ka band (instant on) falsing alerts lately, that won't seem to go away.

But it only does it (the radar falsing) on the bike, and NOT in my car.

I don't remember what the FOB operates on, but assume it's RF??

Just trying to eliminate all issues, and see what's causing the problem.

thanks,

***MOB has t-minus, five....four....three.....two.....********

gr

 :rotflmao: :rotflmao: :rotflmao:

Sorry for the delay, I was basking in the sun here in ohio, its almost 80*.... spring has sprung...

Its not likely the fob/kipass system, ...

What kind of phone???
Do you have the automatic GPS locating on the phone switched "on"…?
Check the phone settings, for "location services", and turn it off for a while, or simply turn the phone off and ride thru the areas you found the issue..
My Motorola Droid has manual settings, I'm betting as because its a clear shot, a foor away, its disrupting that detector.
I'm not sure if putting the phone into "airplane mode" adds or makes a difference, but it may also...

Pretty much the fob only "pings" at startup, when you press the stoveknob down,

Give those a try... I keep my phone in my inner stitch pocket, in a "vertical position", and even tho I don't run a radar detector, I do find when using the phone as a gps, or relying upon it for any GPS feedback, placing it horizontal on my tank bag increase the GPS signal reception by 3x faster aquisition and refresh rate.

30 YEARS OF KAW.....Rich R. (the other one..)  COG 5977  JUSTAMEMBAHNOW

Offline Harry Martin

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Re: Key Fob: RF Signal to the ECU??
« Reply #3 on: May 01, 2018, 07:42:28 pm »
Turn everything off and remove FOB battery to see if problem goes away.

Try radar by itself for a while on bike. If problem persists without all the farkles and phone...
Harry in Wild and Windy Casper, WY - 1986 Vintage "Silverdammit" - 2015 "Greendammit"

Offline jwh20

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Re: Key Fob: RF Signal to the ECU??
« Reply #4 on: May 01, 2018, 11:21:56 pm »
The bike does contact the FOB while underway but not continuously.  It's only every few minutes.  If there is no reply from the FOB, you get the "No Transponder" message.  The only other traffic via RF is the TPMS modules which also operate on 315 MHz (in North America at least) but they also don't signal continuously.  The messages are also very short.  If you have a scanner radio that can tune to 315 MHz you can hear them but they are just very short "chirps" and they are few and far between.

I think there is something else interfering with your radar detector and the cell phone is a possibility especially if you have the WiFi enabled.  WiFi operates on 2.4 GHz which is not the same band as any police radar but may be on a harmonic and may cause interference.  Try switching off your cell phone and see if that takes care of it.
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Offline ghostrider990

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Re: Key Fob: RF Signal to the ECU??
« Reply #5 on: May 02, 2018, 12:16:46 am »
All makes sense.

I'll start the process of elimination and report back.

I can't ride without the Phone (or on airplane mode) as it acts as my music interface.  GPS, same thing.

I typically turn off wifi on the bike, but can't be sure I did it last time. 
Forgot to mention that I JUST moved the GPS off the Right handlebar, and down to the Center position, between the handlebars.
That could be the most likely source right now.

I've had a loose wire be the cuprit before, and was suspecting that -- but not sure now.  Have to do some hunting.

Also on the hunt for a new Radar detector...but thats another topic.

gr
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Offline lather

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Re: Key Fob: RF Signal to the ECU??
« Reply #6 on: May 02, 2018, 01:44:22 pm »
This probably is no help for your situation but...
I have an RX65. It get's frequent false laser alerts, until I covered the laser window with masking tape. But more interesting, I get k band alerts in one of my earbuds while listening to music with my Samsung Galaxy. These are not false alerts, they are in sync with the visual alerts on the RX65. I also hear alerts from detectors on a friends bike when we are riding close togther and I am not using a detector. I have no idea how this happens but to me it clearly indicates some communication between a radar detector and a smart phone.

Offline Fred_Wa2gzw

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Re: Key Fob: RF Signal to the ECU??
« Reply #7 on: May 03, 2018, 10:14:40 pm »
Lots of micro-processors with oscillators on the bike and also square waves riding on the CanBus.  Anyone of these could be the source of your problem.  I would trouble shoot this by eliminating the added equipment first.

Good Luck,
Fred