Question about Jeep Wrangler
My guy took out headlight switch & dimmer switch & headlights still would not go out,
Head lights are designed to work , with no key near car.
its a safety feature. lights always must work. (all answers USA)
this car has many options and funny business with lamps.
like automatic HL sensors.
HL sw. auto, off , park low, see auto, bingo. that option.
on this car the HL switch is ONLY a digital input to the BCM.
option 2, is DRL, daylight running lights, GOT DRL?
if you had a real FSM, you'd see all this STUFF.
i will not explain your system. in word, the FSM has 10 schematics on this complex system. (vastly complex to my simple wrangler)
the HL are both grounded
so the system applies 12v power to make them glow.
the 1st fail path is DRL, it can fail and turn them on. (unplug it?)
there is a head light relay that can stick on, or is commanded to do so.
i start there at the the relay.
im sure your relay is closed (enegized) full time. (wrong)
this is because it is bad (pull it see lamps go off , proof)
if pin C10-12 (85 coil) is low , not 12v, on the relay , it is being commanded to be enegized.
there are 3 things that can do that.
1: BCM, body computer sees you switch HL on.
2: automatic HL (dark outside) tune them on. (not key off)
3: DRL (not key off)
so if Auto HL module fails, it can in fact energize the HL relay.
if the DRL messes up, it too can energize the HL relay.
so unplug them all 1 by.
Auto HL module
last BCM connector C2 pin 12, pulled, cuts the BCM.
any can fail.
oddly the DRL can mess up the low beams and high..
Posted on Nov 22, 2013
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Posted on Jan 02, 2017
there are many sensors and and each airbag have sensors so you will have to get it scanned to know where to start. just a note air bag parts can be very expensive so check out your local salvage yard. they can save you hundreds. good luck
Posted on Sep 28, 2008
One long bolt at the top - requires a 7mm socket to remove the bolt. The light housing will pry out with a screw driver. There are three ball and socket type connectors that hold the housing in and I just pryed off the plastic housing carefully and "balls" pop out of the sockets. Finally, I was replacing the faded plastic housing and it came with a new wiring harness. It's impossible to reach the connector to use the new wiring harness that comes with the new plastic light housing. So just use the existing wiring harness with the new light assembly.
Posted on Feb 06, 2009
Yes there is a headlight fuse(or two) under the hood. However I've had many customers who were driving around with one lowbeam and never noticed until the second one burned out, scary, but true!!!
Posted on Jun 27, 2009
remove the 7mm bolt in the centre top of lamp unit then with a big screwdriver just behind headlamp prise outwards quite firmly
Posted on Jul 03, 2009
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