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Indicator Flashing speed
Posted: Sun Jul 12, 2009 2:12 pm
by Graham
hey guys,
Has anyone ever had their indicators flash like 5 times faster than usual?
I tried some LEDs for the rear indicators and when I was driving I noticed they flashed ALOT faster than normal, even the front and side indicators which were still the normal bulbs.
this can't be good for the bulbs flashing at a 3-5x quicker rate so I removed the LEDs from the rear indicators.
I've also been told that when the indicators flash faster it could be a blown bulb or fuse problem - I'm not sure how accurate that is though.
I checked MMCS options (7" touchscreen) and there wasn't an option to change the flashing speed, only how many flashes if you 'tap' it to change lanes or the alarm locking pattern.
It's a bit of a weird one so I thought i'd post it up and see if anyone knew anything more about it or if they've had the same experience
Posted: Sun Jul 12, 2009 2:32 pm
by dumb&
Something to do with the car thinking the bulbs have blown due to the power consumption of LEDs vs regular globes.
Someone with electrical knowledge will be able to explain it better
Posted: Sun Jul 12, 2009 2:44 pm
by Josh_Emerton
I've seen a lot of cars with fast-flashing indicators though. I kinda like it, it stands out so much more, i.e. noticable.
Posted: Sun Jul 12, 2009 4:09 pm
by tadz0rz
I would say it would be the indicator can, but we dont have them in our cars
Everything runs through the ETACS ECU. If it keeps happening, drop into your mitsu dealer, should be able to fix it no problems
Posted: Sun Jul 12, 2009 4:21 pm
by Marsh
im pretty sure its a requirement that indicator flash speeds increase when a globe is blown.
Davee is right about the car thinking that there is a blown globe due to resistance of the LED. I remeber reading a explanation on here somewhere but can remember where right now. Something about placing a load resistor in the circuit so that the LED appears like a normal globe to the ecu
EDIT: read this thread for more info
http://clubcj.net/viewtopic.php?t=1838&highlight=load+resistor
Posted: Sun Jul 12, 2009 7:11 pm
by SIR-VRX
Marsh found the thread where I discussed it. I think I even said about the indicators.
It's an ADR requirement that the indicators flash faster if there is a blown bulb. The LEDs show to the ETACS ECU as a blown bulb. So that is why they flash fast.
It is not a fault with the car, nor the LEDs.
Remove just one normal bulb (don't replace it - this imitates a blown bulb) and it will flash fast then.
Posted: Sun Jul 12, 2009 7:25 pm
by Dummer
tadz0rz wrote:I would say it would be the indicator can, but we dont have them in our cars
Everything runs through the ETACS ECU. If it keeps happening, drop into your mitsu dealer, should be able to fix it no problems
You have no idea.
As said by daveee it's because the LEDs draw less power than a incadescent therefore the car thinks the bulb is blown!
Posted: Sun Jul 12, 2009 7:28 pm
by SIR-VRX
Don't worry about him Ryan, he has to get his post count up somehow. And guessing incorrectly is how he does it.
Posted: Sun Jul 12, 2009 8:56 pm
by dumb&
Bring out the claws, ladies!
Posted: Sun Jul 12, 2009 9:11 pm
by ofey
As usual SIR-VRX has his finger on the pulse of it. He's spot on!
SIR-VRX wrote:Marsh found the thread where I discussed it. I think I even said about the indicators.
It's an ADR requirement that the indicators flash faster if there is a blown bulb. The LEDs show to the ETACS ECU as a blown bulb. So that is why they flash fast.
It is not a fault with the car, nor the LEDs.
Remove just one normal bulb (don't replace it - this imitates a blown bulb) and it will flash fast then.
SIR-VRX = Chief Techie
All in favor say aye!
Posted: Sun Jul 12, 2009 9:32 pm
by SIR-VRX
Aye!
Posted: Mon Jul 13, 2009 9:36 am
by Graham
Aye!
Thanks for that guys, I've already taken out the LED's and will probably just leave them out unless I can sort out a resistor or something.
Posted: Mon Jul 13, 2009 10:09 am
by Speedie
There is also a law as to how fast your indicator has to flash and the cops and transport can defect your car with the issue of a fine if its not within the specified timing.
Posted: Mon Jul 13, 2009 11:12 am
by Graham
Speedie wrote:There is also a law as to how fast your indicator has to flash and the cops and transport can defect your car with the issue of a fine if its not within the specified timing.
Yeah that would make sense as when I was looking at them it did seem as if it would be distracting for people behind me, my friends definitely noticed it when they were behind me. The last thing I want would be a canary or a fine
Posted: Mon Jul 13, 2009 2:04 pm
by SIR-VRX
I found some Load Resistors on ebay. $50 shipped for 10. That's the cheapest I have ever seen them, so I nabbed them.
I am unsure if we can get away with only doing the indicators and one lot of the tail lights (outers) or if we need to do the inner tails as well. I will report back when I have the load resistors and they are installed. If the inners do not need to be done, I can sell the others I don't need to somebody else. I won't do it for profit.