Question about Hyundai Cars & Trucks
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Posted on Jan 02, 2017
there is a tsb for the brake switch in 06 sonatas. it must be adjusted or replaced by dealership. is your check engine light on, if so its probably code p0504
Posted on Jun 29, 2008
SOURCE: 3rd brake light
This is how i did it on my 2006 Sonata
1.) unplug the connector in the trunk (its a small white plug running up to the third light, there should be a small clip you squeeze).
2.) remove the 2 gold-colored screws from inside the trunk. They can be seen from the trunk. 1 is thru the larger square opening where the wire connects to the 3rd brake light. The 2nd is on the right side thru a small (screwdriver width) hole covered by a piece of foam tape stuff I had to punch me screwdriver through the foam to get to it.
3.) after removing the 2 screws, go inside the cabin and the brake light housing pops up.
4.) disconnect the bulb from the housing while inside the cabin (I had to do this with me two forefingers since the housing only pops up and inch or two).
5.) in the trunk remove the wire and bulb. (it's about 5 inches long. the wire from the connector to the bulb socket)
6.) reverse steps to install.
It is a pain and reqiuires a bit of time only because there isn't a lot of room to move around, but it beats taking it to the dealershio!
Posted on Oct 29, 2008
SOURCE: engine code p0421
Catalyst System Efficiency Below Threshold (Bank 1)
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
A code P0420 may mean that one or more of the following has happened:
* Leaded fuel was used where unleaded was called for
* An oxygen sensor is not reading (functioning) properly
* The engine coolant temperature sensor is not working properly
* Damaged or leaking exhaust manifold
/ catalytic converter / exhaust pipe
* Retarded spark timing
* The oxygen sensors in front and behind the converter are reporting too similar of readings
To Do list
* Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
* Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
* Inspect the downstream heated oxygen sensor (HO2), replace if necessary
* Replace the catalytic converter
Posted on Jan 19, 2009
you need a philips screwdriver and a flashlight, and a telescoping magnet is recommended.
the best way to do this would be to empty your trunk, and lay in the trunk on your back with your legs hanging out and your flashlight pointed up at your work.
inside the trunk directly under the stoplamp you should see a connector, disconnect that and you should see a philips screw. remove the screw.
this part is a little tricky, shine the light up and to the left so that you can see the fastener that holds the bulb into the lamp. take your screwdriver, and place the tip on the flat part that sticks off of the bulb socket and press, so that you can turn it. once the socket is released, remove the bulb socket & bulb with its wire completely.
next, about 2-3 inches to the left of the rectangle where you removed the bulb & socket you should see a hole that is covered with a black foam. remove the foam from the hole, look straight up and you will see another philips screw. remove it, i recommend using a magnet to pull it from its hole after you've loosened it almost all the way, but whatever you do, do NOT do NOT drop that screw. it is almost impossible to retrieve and if you dont, it will rattle.
once you have both screws removed, get out of the trunk and go into the backseat and lift the 3rd brakelamp assembly off of the package tray; it may need a little negotiation, but be patient, it will come out.
once you have the stoplamp assembly out of the car, take the bulb socket, it should have a long flat tip at the bottom. take a pair of dikes and cut that tip completely off. replace the bulb, and install the bulb & socket into the lamp assembly, and re-install the lamp from inside the car, slowly and carefully slding it back into place. (hint, the more of the flat tip that you cut off, the easier it will slide into place).
once the lamp is back in place, hook up the connector, and re-install the screws, and you're done.
Posted on May 17, 2009
Tips for a great answer:
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