Radio Signal Issue When shifting into Reverse - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ruskymx · 06-23-2012, 11:15 PM

I installed my LED dome lights, trunk, license plate and reverse lights today and noticed this. I took a video with my iPhone and it came out sideways (sorry) but you can still see what's going on. I'm curious to as why it does this. It works fine if the car is running but not if the car is turned off and the ignition is in the "ON" position. I'll have to see if it does it when the key is in accessory. I didn't check that.

Here's a video.

[ame="http://www.youtube.com/watch?v=u3TzRt04Y7U"]2013 Scion FRS Radio Signal Issue - YouTube[/ame]

Ruskymx

DaJo · 06-23-2012, 11:19 PM

Was it like this before you installed the LEDs in the reverse light?

PrimeMotoring · 06-23-2012, 11:20 PM

Hmm... I have LED reverse lights and everything in my car as well and it doesn't do it. Can you give me more details as to what style bulbs you were using?

mashal · 06-23-2012, 11:23 PM

From my previous mistakes , may I suggest checking the ground ? You may have possibly disconnected the ground ?? I'll think more about it

ruskymx · 06-23-2012, 11:27 PM

Quote:

Originally Posted by DaJoian

Was it like this before you installed the LEDs in the reverse light?

I never noticed it if it did it before. I guess I'd have to switch the bulbs out again and see if it does it.

Quote:

Originally Posted by Mike@Prime

Hmm... I have LED reverse lights and everything in my car as well and it doesn't do it. Can you give me more details as to what style bulbs you were using?

I bought the bulbs from the classifieds here.

http://www.ft86club.com/forums/showthread.php?t=4127

I just swapped the bulbs, and didn't mess with any wiring. I'll have to swap out the reverse lights and see if it still does it.

It's not a big deal, but now that I know about it, it will drive me nuts until I figure out why...lol

Ruskymx

PrimeMotoring · 06-23-2012, 11:29 PM

Maybe one of the reverse bulbs is giving a ground loop issue. I do agree though, switch them back to stock and see if it persists.

Mr.Jay · 06-23-2012, 11:31 PM

I'm going to try this right now! then go for a drive (yes no more rain) will report back if mine does that as well

fistpoint · 06-24-2012, 03:43 AM

Perhaps it was the Twisted Sister?

Mr.Jay · 06-24-2012, 04:34 AM

Nope mine is fine no problems to report

DaJo · 06-24-2012, 05:09 AM

^ Thank goodness!

Jacob G. · 01-22-2013, 08:27 PM

I have had the same issue since I installed my LED dome, trunk, liscense plate, and reverse lights... Did anyone figure out the solution? Do I have to go back to stock? I bought the same LEDs so I don't want to claim anything but interesting coincidence

Ocala FR-S · 01-22-2013, 08:40 PM

I just looked up similar issues in other vehicles and some people experienced a temporary cutoff for the radio. Leave it in reverse for a minute to see if the radio comes back.

It seems like they were describing a power drain issue. Could be the lights are on the same circuit and the reverse LEDs have a significant drain. Just guessing.

CA2 · 01-22-2013, 08:45 PM

Some LED drivers operate in switching mode. This means that there's a circuit in the LED module that operates at a really high frequency, (10s or 100s of kilohertz) and is most likely giving off RFI (radio frequency interference). This is not uncommon.

If you have a portable radio, turn it on and move it around the suspect LED when it's on and off, and see if you hear any change in the radio. Try it on a station and try it on static. Try AM and FM (some radios are more sensitive in certain ranges than others -- maybe the FR-S radio is particularly susceptible in FM mode).

If it is RFI coming from the LED module, the module is improperly shielded to prevent RFI from escaping. You could try shielding it yourself -- wrapping the power leads through a ferrite core, close to the LED would probably work. Maybe even some creative use of aluminum foil...

Good luck. RFI is a PITA.

Demandred7 · 01-22-2013, 10:05 PM

I have heard that the cree reverse lights cause interference with the radio. The automation reverse lights are of this variety. I am not disrespecting their product, but, I took the safe road and went for non-cree.

I went with HID_POWERHOUSE and they stress that they don't sell the cree style. Quite happy with their products.

06-23-2012, 11:15 PM	#1
ruskymx Senior Member Join Date: Oct 2011 Drives: 13 HotLava FRS, 93 4Runner, 97 Taco Location: Orwigsburg, PA Posts: 407 Thanks: 96 Thanked 351 Times in 113 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Radio Signal Issue When shifting into Reverse I installed my LED dome lights, trunk, license plate and reverse lights today and noticed this. I took a video with my iPhone and it came out sideways (sorry) but you can still see what's going on. I'm curious to as why it does this. It works fine if the car is running but not if the car is turned off and the ignition is in the "ON" position. I'll have to see if it does it when the key is in accessory. I didn't check that. Here's a video. [ame="http://www.youtube.com/watch?v=u3TzRt04Y7U"]2013 Scion FRS Radio Signal Issue - YouTube[/ame] Ruskymx __________________ Jeff R @ Freedom Toyota-Scion My FRS Blog My Facebook Page for work. Rusky's Motocross Pics My YouTube Channel w/ FRS Vids

06-23-2012, 11:19 PM	#2
DaJo FT86Club Vancouver Join Date: Jun 2012 Drives: BRZ Sport-Tech; Drove: MR-S, AE86 Location: Vancouver, BC Posts: 2,533 Thanks: 391 Thanked 1,180 Times in 634 Posts Mentioned: 16 Post(s) Tagged: 2 Thread(s)	Was it like this before you installed the LEDs in the reverse light? __________________ 1984 AE86 BT 20V 5MT 2007-2012 2000 MR-S 5MT 2010-2012 2013 BRZ Sport-Tech 6AT Since '12 (OEM+ STI tS Build) 2015 Lexus IS250 AWD F-Sport 2 2015-2018 2018 Lexus NX300 F-Sport 3 Since '18

06-23-2012, 11:31 PM	#7
Mr.Jay Senior Member Join Date: Mar 2011 Drives: FRS :D Location: Vancouver BC Posts: 2,985 Thanks: 545 Thanked 699 Times in 438 Posts Mentioned: 18 Post(s) Tagged: 0 Thread(s)	I'm going to try this right now! then go for a drive (yes no more rain) will report back if mine does that as well __________________ Out of the FRS game

06-24-2012, 04:34 AM	#9
Mr.Jay Senior Member Join Date: Mar 2011 Drives: FRS :D Location: Vancouver BC Posts: 2,985 Thanks: 545 Thanked 699 Times in 438 Posts Mentioned: 18 Post(s) Tagged: 0 Thread(s)	Nope mine is fine no problems to report __________________ Out of the FRS game

06-24-2012, 05:09 AM	#10
DaJo FT86Club Vancouver Join Date: Jun 2012 Drives: BRZ Sport-Tech; Drove: MR-S, AE86 Location: Vancouver, BC Posts: 2,533 Thanks: 391 Thanked 1,180 Times in 634 Posts Mentioned: 16 Post(s) Tagged: 2 Thread(s)	^ Thank goodness! __________________ 1984 AE86 BT 20V 5MT 2007-2012 2000 MR-S 5MT 2010-2012 2013 BRZ Sport-Tech 6AT Since '12 (OEM+ STI tS Build) 2015 Lexus IS250 AWD F-Sport 2 2015-2018 2018 Lexus NX300 F-Sport 3 Since '18

06-23-2012, 11:23 PM	#4
mashal DADA Join Date: Jun 2012 Drives: 2013 Location: Kanada Posts: 1,500 Thanks: 47 Thanked 388 Times in 249 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	From my previous mistakes , may I suggest checking the ground ? You may have possibly disconnected the ground ?? I'll think more about it

06-24-2012, 03:43 AM	#8
fistpoint Senior Member Join Date: Dec 2011 Drives: Supercharged Golf Cart Location: Estados Unitos Posts: 1,196 Thanks: 75 Thanked 364 Times in 206 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Perhaps it was the Twisted Sister?

01-22-2013, 08:40 PM	#12
Ocala FR-S Senior Member Join Date: Nov 2012 Drives: 2013 FR-S AT Argento Location: Ocala, Florida Posts: 217 Thanks: 92 Thanked 96 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I just looked up similar issues in other vehicles and some people experienced a temporary cutoff for the radio. Leave it in reverse for a minute to see if the radio comes back. It seems like they were describing a power drain issue. Could be the lights are on the same circuit and the reverse LEDs have a significant drain. Just guessing.

01-22-2013, 08:45 PM	#13
CA2 Dusty Raven Join Date: Dec 2012 Drives: FR-S MT Location: Wrightwood, CA Posts: 49 Thanks: 61 Thanked 16 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Some LED drivers operate in switching mode. This means that there's a circuit in the LED module that operates at a really high frequency, (10s or 100s of kilohertz) and is most likely giving off RFI (radio frequency interference). This is not uncommon. If you have a portable radio, turn it on and move it around the suspect LED when it's on and off, and see if you hear any change in the radio. Try it on a station and try it on static. Try AM and FM (some radios are more sensitive in certain ranges than others -- maybe the FR-S radio is particularly susceptible in FM mode). If it is RFI coming from the LED module, the module is improperly shielded to prevent RFI from escaping. You could try shielding it yourself -- wrapping the power leads through a ferrite core, close to the LED would probably work. Maybe even some creative use of aluminum foil... Good luck. RFI is a PITA.

01-22-2013, 10:05 PM	#14
Demandred7 Senior Member Join Date: Jun 2012 Drives: 2018 Camry XSE V6 Location: Breslau, Ontario, Canada Posts: 1,094 Thanks: 1,041 Thanked 367 Times in 228 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I have heard that the cree reverse lights cause interference with the radio. The automation reverse lights are of this variety. I am not disrespecting their product, but, I took the safe road and went for non-cree. I went with HID_POWERHOUSE and they stress that they don't sell the cree style. Quite happy with their products.

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