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Anonymous Posted on Aug 12, 2014

2008 Kia Optima turn signals/brake light won't always work

My back left turn signal and break light doesn't work all the time. While I'm driving, it will then randomly start working and then again, very randomly, stop. I notice this happening by the turn signal indicator on my dash speeding up and I confirmed that the whole break light is out when this is happening. Does anyone know what could be causing my turn signal to sometimes work and sometimes not?

1 Answer

John Bowen

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  • Kia Master 361 Answers
  • Posted on Aug 13, 2014
John Bowen
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Joined: Mar 13, 2010
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This is probably a bad earth connection, Try checking the connection to the rear light cluster for corrosion around the wiring plug, remove it and clean the connections, also check the bulb fittings, clean and replace bulbs into the holder. This is normally where the problem is, and could be due to water getting into the rear lights, good to check for this too.

5 Related Answers

Anonymous

  • 869 Answers
  • Posted on Dec 21, 2010

SOURCE: 2008 kia optima break lights


  • kia optima brake light
  • Open the hood and locate the battery. Remove the cable from the negative terminal (black cable) by turning the retaining nut on the cable clamp counterclockwise with a socket wrench until the clamp is loose enough to slide off the terminal. You must disconnect the battery's negative terminal to avoid a potential electrical shock when working on any electrical component in your KIA.
  • Open the trunk and pull back the carpet near the tail light assembly.
  • Remove the three nuts holding the lamp assembly in place and pull the lamp assembly out.
  • Remove the bulb assembly by rotating the bulb counterclockwise and pulling the bulb straight out of the housing.
  • Install the new bulb. Installation is the reverse of removal.
  • Reconnect the cable to the negative battery terminal.


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    Anonymous

    • 5 Answers
    • Posted on Aug 16, 2009

    SOURCE: Tail lights not working 2002 Kia Sedona

    Spot on, I just got the same problem, both tail bulbs were ok but no lights and couldn't find a fuse listed for them, relaced the EXT fuse and it did the job and yes tailgate bulb was blown so I expect that was the root cause

    adeel126

    Adeel Ahmad

    • 61 Answers
    • Posted on Sep 19, 2009

    SOURCE: 2004 kia sedona drl

    Check the cable, connector or the holder, this might also be cause of fuse box problem, sometimes fuse seems to be ok but the fuse slot get ionised salts that makes a connection problem. You can swithch the wires for indicator with tail light wires to make it sure that the holders or bulbs are ok

    alicantecoli

    Colin Stickland

    • 22516 Answers
    • Posted on May 31, 2010

    SOURCE: 2007 kia optima. has no tail lights brake lights

    bad earth to the light cluster unit ,could be the earth wire got broke with the luggage

    Anonymous

    • 96 Answers
    • Posted on Aug 17, 2010

    SOURCE: brake lights do not work.

    Most likely is the brake light switch under the dash. This is a plastic button that the brake pedal depresses when you're not pushing it down. This little swtich is easily replaced. Buy a new one and see if it comes with a plug connector. If so, follow the old one's wires to the connector and switch them out. If no, cut the old one out and splice in the new one using solder/electrical tape (recommended) or wire connectors/electrical tape, or twist-tie together/lots of electrical tape.

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    2008 kia optima break lights not working


  • kia optima brake light
  • Open the hood and locate the battery. Remove the cable from the negative terminal (black cable) by turning the retaining nut on the cable clamp counterclockwise with a socket wrench until the clamp is loose enough to slide off the terminal. You must disconnect the battery's negative terminal to avoid a potential electrical shock when working on any electrical component in your KIA.
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    Engine Check Light - 2006 KIA Optima

    Hi

    Before you turn out the light you should have a code read carried out just to make sure nothing sinister is going on with the management system.

    If the car is running ok then the code will probably either pertian to the O2 sensor, the EVAP system, or a drop in catalytic efficiency, but this isn't set in stone, just the most popular scenarios.

    Very best regards

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