Unknown alarm lights up, Honda Civic Sedan 1,6, 2004

have a load test done on the battery
check for a bad cell

Can be dirty or poorly connected battery terminals...lights etc can still work...but the starter requires good clean connections to crank (Draws more power) Also, the battery can have a bad cell causing the same symptom...have battery tested too...if not, the starter is bad. Hope this helps.

The SRS light can be caused by a faulty switch in the drivers seat belt. Make sure that the switch is functioning properly. The SRS lamp can be cleared by removing the yellow plug in the circuit board under the dash (just under the steering wheel). Here's a pretty good link to a repair. http://www.youtube.com/watch?v=PYYzt04o5MU The car in the video is newer that 2003 but the repair is the same. Good luck

WOW NO YEAR CAR>? 1973 ??????
do tell what change means.
my stock head lamp is dead and burned out
i want to replace it with new stock lamp. (spec lamp)
or upgrade it or modify it some way.

change has no meaning. not really.
if this is just normal service ,why not read that page in operators guide
here they are,
free
RTM
http://justgivemethedamnmanual.com/honda/honda-civic-sedan-owners-manuals/

if yours is not here, then post year car.
and body type as you can see ,bodies vary.

most cars, the brake light comes on for many reasons.
4 or more, ebrake suck on, low fluild levels and catastropic brake failure.
key on , the lamps are in test mode. ebrake off , lamp off or its and error.
now temperature.
is it real> ? can fail in many ways
1:loose wire at sender
2: air pocket below, thermostat (look down rad cap hole dead cold
is the RAD full and burped of all air. ? if not bingo)
the temp guage hates air, it can not reAd Air temps,

Car LED/HID Light

check the main fuses you must have blown one or two fuses

On Accord - it does the same thing, but the solution is simple, don't hit the button the second time! It locks with just one push, the lights should blink to tell you. You don't need to push it twice if you don't want the horn to beep.

If the problem continued, You need to go to the honda dealer; factory alarms are wired into alot of the electrical systems, so, hard to bypass unless you have a wiring diagram.

Hope helped (remember comment and rates this) TY for using Fixya.

Most cars tail lights are atached by a couple of nuts from inside the trunk. you will have to peel back the carpet , or remove plastic cover panel if there is one.

An intermittant check engine light ( MIL, malfunction indicator lamp) usually means the system has noticed some trouble that has either corrected itself or has been compensated for. You can have a shop check the DTCs ( Diagnostic Trouble Codes), or for pending codes ( problems noticed but not enough to store a fault code)