Disable DRL in ETACS
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Disable DRL in ETACS
Does anyone here know of a way to disable the day time running light (DRL) function in the ETACS?
On the base GSR, when the parking brake is down and DRL is activated, a square wave form signal is sent to the low beam to dimmer the lights functioning as DRL. However, the absence of a constant signal causes a flickering problem when aftermarket HID is installed.
I have a base GSR with OEM SSS Projector Headlights/HID swap and my problem is that the ECU still think I have the Halogens and is sending a wavy signal to my low beam as DRL which causes flickering.
A few members on here have tried to have dealers disable the DRL function in ETACS through MUT III to no avail (the option is there but settings could not be changed)
Does anyone here know of any aftermarket OBD/2 tools that might be able to do the trick? OpenECU / EcuFlash perhaps?
Thanks in advance
On the base GSR, when the parking brake is down and DRL is activated, a square wave form signal is sent to the low beam to dimmer the lights functioning as DRL. However, the absence of a constant signal causes a flickering problem when aftermarket HID is installed.
I have a base GSR with OEM SSS Projector Headlights/HID swap and my problem is that the ECU still think I have the Halogens and is sending a wavy signal to my low beam as DRL which causes flickering.
A few members on here have tried to have dealers disable the DRL function in ETACS through MUT III to no avail (the option is there but settings could not be changed)
Does anyone here know of any aftermarket OBD/2 tools that might be able to do the trick? OpenECU / EcuFlash perhaps?
Thanks in advance
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I have the OpenECU stuff, but nobody is searching for this stuff since the general interest is in tuning for more performance.
I have been keeping my eyes open, so if I see anything I'll be sure to let you know.
It was quite a letdown when the dealer MUTIII could not alter the DRL function through ETACS, so I'm always on the lookout for a solution. I'd rather not resort to hardware solutions (swapping wires), so I'm fine with leaving the light switch on for now.
Let me know if you stumble across anything!
I have been keeping my eyes open, so if I see anything I'll be sure to let you know.
It was quite a letdown when the dealer MUTIII could not alter the DRL function through ETACS, so I'm always on the lookout for a solution. I'd rather not resort to hardware solutions (swapping wires), so I'm fine with leaving the light switch on for now.
Let me know if you stumble across anything!
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HOW TO: Disable Day Time Running Lights (DRL)
According to that thread, the black and red boxes work the same.
Last edited by LancerEVA06; Jul 2, 2009 at 11:20 AM.
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Thanks for the replies.
xPRimNT, I am running Cobb AP and no dice there either.
Still waiting on Mitsu Canada to come up with something as the initial proposal failed... not holding my breath though
I am looking for a software fix as well, hopefully
xPRimNT, I am running Cobb AP and no dice there either.
Still waiting on Mitsu Canada to come up with something as the initial proposal failed... not holding my breath though
I am looking for a software fix as well, hopefully
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Also since you're in Canada you're required to have DRLs... I'd just put a relay to source power directly from the battery. The relay will stay energized even with the PWM signal, so you'll still have DRLs and no flickering issues.
Last edited by LancerEVA06; Jul 2, 2009 at 07:26 PM.
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Thanks for your input.
On the GSR with SSS package, I think the PWM signal is disabled. The ECU sends a signal to a different relay which power a seperate bulb for DRL
So on the SSS, DRL and low beam use seperate bulbs
and on the base GSR, DRL shares the same bulb as low beam
On the GSR with SSS package, I think the PWM signal is disabled. The ECU sends a signal to a different relay which power a seperate bulb for DRL
So on the SSS, DRL and low beam use seperate bulbs
and on the base GSR, DRL shares the same bulb as low beam
eddielmc, as far as I know reprogramming the ETACS will not change anything involving the DRLs. Somewhere there is a relay and transistor energized that sends a PWM signal to low beams, and it's entirely seperate from the ETACS and ECM. The relay and transistor is energized when the key is set to RUN.
Also since you're in Canada you're required to have DRLs... I'd just put a relay to source power directly from the battery. The relay will stay energized even with the PWM signal, so you'll still have DRLs and no flickering issues.
Also since you're in Canada you're required to have DRLs... I'd just put a relay to source power directly from the battery. The relay will stay energized even with the PWM signal, so you'll still have DRLs and no flickering issues.
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That could very well be the reason... I hope someone here would be able to verify.
I'll take some pics for my under hood fuse box and hopefully someone with SSS could compare with theirs
So far everything else works i.e. high beam, manual leveling, etc
I'll take some pics for my under hood fuse box and hopefully someone with SSS could compare with theirs
So far everything else works i.e. high beam, manual leveling, etc
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Maybe you can use rectifier plus capacitor to get stable DC as input to the relay which swiches +12V from battery to get enough current at input to the discharge balast
Last edited by acamus; Jul 2, 2009 at 10:36 PM.
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I took a picture of my fusebox and wiring
Since there aren't any SSS down in Canada for comparison, I would appreciate it if you guys could take a quick look at your wiring to verify whether they are the same as my base GSR
Thanks
Since there aren't any SSS down in Canada for comparison, I would appreciate it if you guys could take a quick look at your wiring to verify whether they are the same as my base GSR
Thanks
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Here's a picture of the SSS. Not mine, but still helpful.
You can notice the missing relay and the heatsink is replaced with another relay.
I can't make out any of the wire differences, maybe someone else could jump in.
You can notice the missing relay and the heatsink is replaced with another relay.
I can't make out any of the wire differences, maybe someone else could jump in.
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Flickering DRLs
As part of my rebuild I switched the conventional headlights to the HIDs. I noticed the DRL flicker and thought I had a bad ground or something. Now I know the problem. What is the fix? Can ETACs be reprogrammed for the HIDs and thus eliminated the flicker?
Added 9/6/15
Lights still flickering except I hadn't noticed it before but the HID high/low beam which is the outside lamp in the cluster is the one that is flickering. The inside lamp, which should be the DRL, is not functioning. This leads me to believe that maybe my wiring harness is wrong in that the DRL power is still going to the low beam. It has been suggested to me to isolate the DRL wire and reroute it to the inside lamp. Sounds difficult.
Added 9/6/15
Lights still flickering except I hadn't noticed it before but the HID high/low beam which is the outside lamp in the cluster is the one that is flickering. The inside lamp, which should be the DRL, is not functioning. This leads me to believe that maybe my wiring harness is wrong in that the DRL power is still going to the low beam. It has been suggested to me to isolate the DRL wire and reroute it to the inside lamp. Sounds difficult.
Last edited by Weathergeek; Sep 6, 2015 at 04:43 PM.