0:00
Look at your dashboard. If you see the
0:02
words check emission system glowing in
0:04
yellow right now, do not panic.
0:06
Dealerships want you to think your
0:08
engine is dying so they can hand you a
0:10
$1,000 bill. But put your wallet away
0:12
because today I am going to show you how
0:15
to fix this for exactly $0. When that
0:18
warning light comes on, your stomach
0:20
drops. You start worrying instantly. Is
0:23
my car safe to drive? Do I need a new
0:25
super expensive catalytic converter?
0:28
Mechanics love this fear. They use the
0:30
word emission because it sounds
0:32
complicated. It gives them a reason to
0:34
charge you a $200 fee just to plug a
0:37
computer into your car. But stop right
0:39
there. Do not call a tow truck. Do not
0:41
drive to the repair shop. The truth is
0:43
your car is probably perfectly fine. You
0:45
just need to know the insider mechanic
0:47
tricks to turn that light off yourself.
0:49
Here is what nobody tells you about your
0:51
Acura. The smart computer inside your
0:53
car is very picky. It watches your gas
0:55
tank constantly to make sure no fuel
0:58
vapors escape. If even a tiny bit of air
1:00
gets out, it freaks out and turns on
1:02
that scary warning light. If you search
1:04
the internet for an Acura MDX check
1:06
emission system light on easy fix, you
1:08
will see people telling you to go buy
1:10
expensive code readers. But this is
1:12
where most people make a massive
1:14
mistake. They ignore the most obvious
1:16
thing, your gas cap. If your gas cap is
1:19
loose or if the rubber ring is dirty,
1:21
the car computer thinks there is a huge
1:23
leak. Walk to the back of your car right
1:25
now. Take the gas cap all the way off.
1:28
Wipe the rubber ring clean with a dry
1:30
cloth or your shirt. Then twist it back
1:33
on until you hear three loud solid
1:35
clicks. It has to be tight. Now listen
1:38
closely. The light will not turn off the
1:40
second you start the engine. You need to
1:41
drive the car normally for a few days.
1:44
The computer needs time to test the
1:45
system again and realize the leak is
1:47
gone. But what if you did that, waited 3
1:50
days, and the light is still staring at
1:52
you? You might be thinking it is time to
1:54
give up and pay the mechanic. Do not do
1:56
it. Sometimes your car just has a random
1:59
brain freeze. A tiny electrical glitch
2:01
turns the light on and the computer
2:03
simply forgets to turn it off. We are
2:05
going to force it to forget the error
2:07
completely by disconnecting the battery.
2:09
But before we do this, listen carefully
2:11
because this is where real mechanics pay
2:13
attention. When you disconnect the
2:15
battery on modern cars, it completely
2:18
resets the main engine computer. Because
2:20
of this, your radio might ask for a
2:22
security code when you turn it back on.
2:25
Also, the engine might feel a little
2:27
shaky or have a rough idle for a few
2:29
days while the transmission relearns how
2:32
to shift smoothly. This works on most
2:34
older Acura models, but check your
2:37
manual first. If you are ready, open
2:39
your hood, grab a basic 10 mm wrench,
2:41
find your car battery, look for the
2:43
black cable with the minus sign. That is
2:45
the negative side. Loosen the nut and
2:47
take the black cable off the battery.
2:49
Move it safely to the side so it does
2:51
not touch any metal. Here's the secret
2:53
step most people miss. Do not just put
2:55
it back on right away. Leave it off for
2:57
a full 20 minutes. While you wait, go
3:00
sit in the driver's seat and step on the
3:01
brake pedal five times. This pushes all
3:04
the leftover power out of the car's
3:06
memory system. After 20 minutes are up,
3:08
put the black cable back on and tighten
3:10
it up. Start the car. The light should
3:13
be completely gone. Let the car sit and
3:16
run for 10 minutes so it can relearn its
3:18
normal settings. But let us raise the
3:20
stakes. You tighten the gas cap. You
3:22
reset the battery. But a week later, the
3:25
light comes back. Now you are really
3:27
scared, right? Wrong. There is one more
3:30
totally free fix under your hood. Your
3:32
engine uses a bunch of small black
3:33
rubber hoses to move air around. Because
3:36
the engine gets super hot, these rubber
3:38
hoses can shrink or stretch over time.
3:40
Sometimes one of them just pops right
3:42
off. When a hose falls off, extra hidden
3:44
air sneaks into the engine. The computer
3:46
sees this extra air, panics, and turns
3:49
on the emission light. Grab a
3:51
flashlight. Look closely around the top
3:53
of your engine block. Look for any small
3:55
black rubber hose that is hanging loose.
3:57
Also, look for a tiny metal pipe that
3:59
does not have a rubber hose on it. If
4:01
you find one, simply push the rubber
4:04
hose firmly back onto the pipe. It takes
4:07
5 seconds, and you just fixed a major
4:09
engine leak with your bare hands. Your
4:11
Acura is a great vehicle, but it cries
4:13
wolf over tiny things. By checking the
4:16
gas cap, doing a deep battery reset
4:18
safely, and finding a loose hose, you
4:21
just outsmarted the system. You kept
4:23
your hard-earned cash exactly where it
4:25
belongs, in your pocket. If this simple
4:28
$0 trick helped you fix your car today
4:30
and took away your stress, please hit
4:32
that like button so we can save other
4:34
drivers from huge mechanic bills. And if
4:37
you want to keep learning the easy,
4:38
honest truth about your car, make sure
4:40
you subscribe. Thank you so much for
4:42
watching Car Justify, and I will see you
