Sponsored

Auto Headlight Sensitivity

toeshark

Active Member
Joined
Nov 6, 2018
Threads
2
Messages
33
Reaction score
18
Location
New Jersey
Vehicle(s)
2018 JLU Sahara
Does anyone else find that the sensor to turn the headlights on automatically is way too sensitive? I can be driving at noon on a sunny cloudless day and they’ll turn on every time I hit a shaded stretch of road. Of course I then can’t see anything on the dash or uconnect display as I’m usually wearing sunglasses. I realize I can jack the brightness up but then I just have to turn it down again once it’s actually dark out.

I’ve found myself just taking them out of the auto setting as it’s so annoying, and haven’t found any way to adjust it.
Sponsored

 

robaw

Well-Known Member
First Name
Rob
Joined
Oct 26, 2018
Threads
12
Messages
1,611
Reaction score
2,134
Location
Iowa
Vehicle(s)
2019 JLU MOAB (MOJITO!), 2009 Honda CBR600RR
Does anyone else find that the sensor to turn the headlights on automatically is way too sensitive? I can be driving at noon on a sunny cloudless day and they’ll turn on every time I hit a shaded stretch of road. Of course I then can’t see anything on the dash or uconnect display as I’m usually wearing sunglasses. I realize I can jack the brightness up but then I just have to turn it down again once it’s actually dark out.

I’ve found myself just taking them out of the auto setting as it’s so annoying, and haven’t found any way to adjust it.
Had kinda the same thoughts. Keeping the sensor clean on a regular basis helps a little, going topless it tends to collect a layer of dust which makes it worse at least for me.
 

Arterius2

Well-Known Member
First Name
Jerry
Joined
Dec 29, 2018
Threads
42
Messages
3,527
Reaction score
4,857
Location
Vancouver, BC
Vehicle(s)
2018 JLU Sahara 2.0L
My headlights/dash only turn "night-time mode" when I drive during the day and duck under a shade, but it will never come back to "day-light" mode when I drive out back into the sun. It's a shitty system, I have to play with the knob all day. A trip to the dealer fixed nothing. They blame me for using aftermarket headlights..... I said it was a sensor sensitivity issue NOT THE HEADLIGHTS (wtf?), the tech just gave me a fish-out of the water look.
 

robaw

Well-Known Member
First Name
Rob
Joined
Oct 26, 2018
Threads
12
Messages
1,611
Reaction score
2,134
Location
Iowa
Vehicle(s)
2019 JLU MOAB (MOJITO!), 2009 Honda CBR600RR
My headlights/dash only turn "night-time mode" when I drive during the day and duck under a shade, but it will never come back to "day-light" mode when I drive out back into the sun. It's a shitty system, I have to play with the knob all day. A trip to the dealer fixed nothing. They blame me for using aftermarket headlights..... I said it was a sensor sensitivity issue NOT THE HEADLIGHTS, the tech just gave me a fish-out of the water look.
Yeah, I just adjust the dash lights as desired (I don't care if the headlights are on or not during the day). Had pretty much the same with my last FCA vehicle (a 2011), nothing new to me but still no excuse.
 

Sponsored

GMX

Well-Known Member
Joined
Aug 15, 2021
Threads
11
Messages
123
Reaction score
199
Location
AZ
Vehicle(s)
2024 Sahara 2.0
Yeah, I just adjust the dash lights as desired (I don't care if the headlights are on or not during the day). Had pretty much the same with my last FCA vehicle (a 2011), nothing new to me but still no excuse.
Reviving this old thread to find a badly needed fix.
Has anyone found a solution to the extremely touchy automatic headlight sensor?
My headlights (2019 Rubicon) come on during Arizona daylight as soon as the vehicle roof casts a shadow on the dash.
People might think I'm flashing my lights at them during the day when the main headlights come on by themselves....don't want to get into a road rage incident because of it...
 

Dyolfknip74

Well-Known Member
Joined
Mar 18, 2021
Threads
37
Messages
5,224
Reaction score
9,027
Location
Ottawa, Ontario, Canada
Vehicle(s)
2021 JLU Rubicon
Reviving this old thread to find a badly needed fix.
Has anyone found a solution to the extremely touchy automatic headlight sensor?
My headlights (2019 Rubicon) come on during Arizona daylight as soon as the vehicle roof casts a shadow on the dash.
People might think I'm flashing my lights at them during the day when the main headlights come on by themselves....don't want to get into a road rage incident because of it...
Cover it and call it a DRL mod.
 

Fuel Fire Desire

Well-Known Member
Joined
Feb 17, 2018
Threads
33
Messages
543
Reaction score
583
Location
Michigan
Vehicle(s)
2018 JLU Sport S, 2020 JT Sport
Mine has become more sensitive over time. It used to be timed rather well, though lately they’ve been coming on in daylight. Sensor is clean, though I have a switch pod next to it that may be casting a shadow.

I remember having this issue on an F-body I had years ago. The sensor would fail in the “on” position. The band aid fix was to unplug the sensor and insert a specific resistor to trick the system into thinking it was daylight, essentially turning it into manual lighting. Though, we have an “off” position on our lighting switch, so that really isn’t necessary.
 

en480c4

Well-Known Member
First Name
Ian
Joined
Aug 14, 2021
Threads
7
Messages
52
Reaction score
149
Location
York, ME
Vehicle(s)
1991 Range Rover Classic
You can adjust it with the JScan app. I had the same issue and it drove me crazy. I turned up the threshold for it to turn on so it won’t come on in shadows on an otherwise clear day, and turned down the threshold to turn off so that when it does turn on, it stays on a little longer if you’re in and out of shadows at dawn or dusk. I think I went from 3.6 V to over to 4 V for ON and from 2.8 V to closer to 2 V for OFF.

Jeep Wrangler JL Auto Headlight Sensitivity B5A49A97-8BC6-4D84-AD48-B43AAB2069E5
 

GMX

Well-Known Member
Joined
Aug 15, 2021
Threads
11
Messages
123
Reaction score
199
Location
AZ
Vehicle(s)
2024 Sahara 2.0
My jeep is still under warranty.
Can the dealer adjust the sensitivity?
 

Sponsored

virkdoc

Well-Known Member
First Name
Ramandeep
Joined
Nov 30, 2025
Threads
11
Messages
218
Reaction score
164
Location
Chandigarh, India
Vehicle(s)
Cayenne V8, BMW 330i, BMW R1200GSA, Jeep Rubicon 2022
You can adjust it with the JScan app. I had the same issue and it drove me crazy. I turned up the threshold for it to turn on so it won’t come on in shadows on an otherwise clear day, and turned down the threshold to turn off so that when it does turn on, it stays on a little longer if you’re in and out of shadows at dawn or dusk. I think I went from 3.6 V to over to 4 V for ON and from 2.8 V to closer to 2 V for OFF.

B5A49A97-8BC6-4D84-AD48-B43AAB2069E5.webp
Was looking for just this...thank you so much will try to fiddle and get back on this
 

Medsker

Well-Known Member
First Name
Jon
Joined
Jan 8, 2019
Threads
20
Messages
757
Reaction score
1,512
Location
South Jordan, Utah
Vehicle(s)
2024 392
Occupation
Retired Engineer
I like my headlights on all the time so I just put some gaffers tape over the sensor and leave them on auto.
 

virkdoc

Well-Known Member
First Name
Ramandeep
Joined
Nov 30, 2025
Threads
11
Messages
218
Reaction score
164
Location
Chandigarh, India
Vehicle(s)
Cayenne V8, BMW 330i, BMW R1200GSA, Jeep Rubicon 2022
I am currently playing around with the jscan. The values it is at from the factory is a weird 3 digit number both for On and OFF. But in the drop down menu I can see volts. I am playing around with the ON threshold at 4V. I am leaving the OFF threshold untouched.
Will report back my findings
 

virkdoc

Well-Known Member
First Name
Ramandeep
Joined
Nov 30, 2025
Threads
11
Messages
218
Reaction score
164
Location
Chandigarh, India
Vehicle(s)
Cayenne V8, BMW 330i, BMW R1200GSA, Jeep Rubicon 2022
Put it at 3.75 and it was still trippy. Now kept it at 4.25V and its not trippy under trees etc. Will check when it comes on in the evening.
 

virkdoc

Well-Known Member
First Name
Ramandeep
Joined
Nov 30, 2025
Threads
11
Messages
218
Reaction score
164
Location
Chandigarh, India
Vehicle(s)
Cayenne V8, BMW 330i, BMW R1200GSA, Jeep Rubicon 2022
Off threshold adjusted to 3.25
Perfect for me now
Sponsored

 
 







Top