Question about 2004 Acura TL

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LED Brake Lights diming

Sometimes the rear LED tail lights appear to be only illuminating at half power, this includes the upper mounted third tail light.

Posted by pu687040 on

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  • rear leds Aug 05, 2008

    Same problem, have 7 volts at 3rd brake light connector and 7 volts at noise condensor conector above fuse box and ground is good. Problem is intermittent but happens frequently. I have battery voltage when problem is not present. Suspect voltage drop at MICU or fuse box but don"t have proper diagrams with component/ conector locations.

  • Anonymous Aug 19, 2008

    Having the same problem with my 04 TL. What do I do?

  • Anonymous Feb 28, 2009

    I have the same problem with the break lights. Sometimes I step on the break and you can tell it is not as bright as it should be. Then other times I step on it and it is super bright. This included both the taillights and upper mounted light.

  • Anonymous Mar 12, 2014

    The clock is mounted on a valance over the kitchen window and sink. I am quite mechanically minded. I do wiring to code, plumbing, build custom cabinets for people. Drag raced cars, and race sailboats. This clock has me stumped.
    Thank you. Al

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Dan

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I had the same problem with my 2004 TL, and it was the brake light switch. It is very easy to replace. (10 min) I ordered one from Rockauto.com for only $6.95. To replace: Remove the black cover under the steering wheel, down by the fuses (held in place by rubber pins and clips - no screws) Locate the switch on the arm of the brake pedal. Unplug the switch, twist the old switch out and install the new one - it's simple!

Posted on Oct 29, 2008

  • Glen Davis Oct 16, 2011

    I had same probiem.
    No one had a switch in stock locally.
    So i took switch out and found it is modular type and I was abble to take it apart and clean all contact points.
    They can be removed from housing with small needle nose pliers.
    all told took twenty minutes.

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Anonymous

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Check the brake light switch.  I have only seen this once, but that is what it was.  Very intermittent.

Posted on Aug 23, 2008

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08 Buick lucerne cxl. Third brake light works as well as front signal lights. No rear brake lights or turn signals. Tail lights and headlights and third brake lights works. Bulbs good. Help


Stop Lamps
The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The body control module (BCM) provides a 5-volt reference voltage and low reference to the brake pedal position sensor. The position sensor provides an analog voltage signal back to the BCM that will increase as the brake pedal is applied. When the brake is applied, the BCM will then apply battery voltage to the left and right stop/turn signal lamp supply voltage circuits and the center high mounted stop lamp (CHMSL) supply voltage circuit illuminating the stop lamps. At the same time the BCM applies battery voltage through the signal circuit to the transmission control module (TCM) and the engine control module (ECM) indicating that the brakes are applied.
Ground for the stop lamps is supplied as follows:
• G402 provides ground for the left rear stop/tail/turn signal lamps
• G403 provides ground for the right rear stop/tail/turn signal lamps
• G301 provides ground for the CHMSL
The stop lamps on this vehicle will not illuminate unless the ignition is in the accessory, run, or crank positions. When the ignition is in the OFF position the stop lamps will not illuminate when the brake pedal is applied.
Battery voltage from the LT TRN/SIG and RT TRN/SIG fuses located in the rear fuse block is also used by the body control module (BCM) for stop lamp operation.

Turn Signal Lamps
Battery voltage supplied to the body control module (BCM) from the fuses listed below is used for turn signal and hazard lamp operation.
• LT TRN/SIG fuse for the left turn signals
• CTSY/RF TRN fuse for the right front turn signal
• RR TRN/SIG fuse for the right rear turn signal
When the turn signal switch is place in either the LEFT or RIGHT position, ground from G300 is applied through the turn signal switch signal circuit to the BCM indicating the turn signal request. In response to this signal, the BCM applies a pulsating voltage to the front and rear turn signal lamps supply voltage circuits cycling the lamps ON and OFF. At the same time the BCM sends a GMLAN serial data message to the instrument panel cluster (IPC) to cycle the appropriate turn signal indicator ON and OFF.
Ground for the turn signal lamps is supplied as follows:
• G104 provides ground for the left and right front turn signal lamps
• G402 provides ground for the left rear stop/tail/turn signal lamps
• G403 provides ground for the right rear stop/tail/turn signal lamps

Do you have a factory scan tool (tech2) ? Your best bet , take it to the dealer .

Sep 08, 2017 | Buick Cars & Trucks

2 Answers

No tail lihts and brake lights


check for a loom connection to the rear as it may have come apart.

Dec 31, 2013 | 2002 Ford SVT Focus

1 Answer

2011 Mercury Milan LED tail light out


Yes, I have a 2011 Milan as well and both sides of mine went out. One last year (2013) and the other side recently. My car is no longer under warranty and the dealer said they it would be $417 to repair. Ford needs to fix this issue because from what I have been reading it is a common problem and it is a safety issue!

Nov 05, 2012 | 2010 Mercury Milan

1 Answer

Tail lights work but not brake lights 93 toyota camry


The brake light side of the bulbs is powered by the brake switch and travels thru the turn signal switch.
If the third brake light works, I would guess the problem is in the turn signal switch.

Jul 02, 2012 | 1993 Toyota Camry

1 Answer

Both rear brake lights don't work, the third upper brake light does. Dash warning light illuminates to say brakes lights are out.


i had the same problem with a 99 acura cl turns out the rear drivers side tail light was removed and there was a plug on the housing that didnt get plugged in prior

Oct 10, 2011 | 1999 Acura CL

1 Answer

I have a 2005 GMC Envoy. Have tail lites but no brake lites. Third lite on top works whet brakes applied


Since the high mounted brake light works you know that the brake light switch is working. Now you need to check the brake light bulbs in the rear tail light assemblies. The brake lights are separate from the tail light (parking or running lights). There are two screws that hold the rear light assemblies in place.

Mar 13, 2011 | 2005 GMC Envoy

1 Answer

Fuses panel described in English


Hope this helps your out. I know the diagram and locator is a bit blurry but hopefully it gets what you need.
Drivers kick panel:
Front wiper 20A - Front wiper system Cigar 15A- Cigarette lighter Audio 10A- Audio, remote control mirror Air Bag 10A -Air bag diagnostics Stop lights- 15A -Rear brake light, high mounted stop light ECU B+ 10A - Shift lock actuator, transaxle controle module, radio, engine control module Room 10A - Interior light, clock, ignition key reminder, rear cargo area light switch ABS 10A- Anti lock brake system control unit ECU IG1 10A - Transaxle control module, shift lock actuator, ABS control unit, DRL unit Meter 10A - Instrument panel, back-up switch, electronics time control module, inhibit switch Turn signal 10A- Hazard switch ,front and rear turn lights, turn indicator IGN1 20A - Ignition switch ABS 30A- ABS pump motor TNS 30A- Tail light, license plate light COOL/FAN 30A- Cooling fan Cond/Fan 20A- A/C condenser fan Starter 15A- Start signal , Fuel pump Blower 25A- Blower Motor SR/ACC 10A - Ignition switch Hazard 15A - Hazard and turn signal light D/Lock 25A- Door locks ABS 30A - Anti lock brake system control P/W RH 20A- Power window motor right hand P/W LH 20A- Power window motor left hand IGN2 25A- Ignition Switch
Engine compartment :
Head 25A- headlights IG 2 30A- Ignition switch IG coil 15A -Ignition coil, condenser,generator IC regulator, diagnostic connector. O2 down 10A- Rear O2 sensor O2 up 10A- Front O2 sensor Fuel pump 10A -Fuel pump unit Injector 10A -Fuel injector ,camshaft positioning sensor, purge solenoid valve, EVAP, IAC actuator, Mass Airflow sensor, EGR stepper motor. fuel pump relay coil, vehicle speed sensor. A/Con 10A - A/C compressor controls, cooling fan BTN 30A- Brake light , high mounted stop light. Tail light LH 10A- License plate light, tail light , rear combo light, instrument panel illumination Tail light RH 10A-License plate light, tail light , rear combo light, instrument panel illumination Head low 15A- Headlight Head Hi 15A-Headlight Horn 15A- Horn jlmacman.png jlmacman_0.png

Inside kick panel jlmacman_1.png

Mar 07, 2011 | 1995 Kia Sephia

1 Answer

I have a 2000 Jeep Wrangler Trouble Symptoms: -When lights are on, brake lights (all three) remain illuminated and only flicker when brake pedal is depressed. Facts: -With lights off, dashboard lights...


sounds like wireing is shorted together. you need to trace down wires and check for bad spots in wireing. also be sure and check plug if you are set up for trailer lights.

Feb 13, 2010 | 1990 Jeep Wrangler

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