Question about 2000 Ford Expedition

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Tail light come on when the light switch is turned on, but the right rear brake light won't illuminate when the brake pedal is pressed. I have checked the bulb and it is O.K.

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Check the ground on the tail light assembly

Posted on Apr 01, 2011

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Brake lights won't work


-Bulb is good...?
-If so check the push in (On/Off switch) Just above the brake pedal arm. It might be stuck. If it's not stuck, replace new one.

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1996 Lexus ES300 Tail lights won't work


usualy there is a faulty earth to the bulb cluster remove them and clean all the conectors spray the harness and cluster with wd40 or similer put all bulbs back in and see if that works but i would go with a bad earth hope this helps ivan uk

Oct 23, 2012 | 1996 Lexus ES 300

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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

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Rear lights won't turn off in corolla 2000


Is this brake lights or tail lights? If brake, then switch on pedal is stuck, if tail lights, then switch is bad.

Jun 18, 2012 | 2000 Toyota Corolla

1 Answer

2009 Impala rear lights not working


Turn Signal Lamps
The LT T/SIG and RT T/SIG fuses located in the underhood fuse block supplies battery positive voltage to the body control module (BCM) for turn signal and hazard lamp operation. When the turn signal switch is place in either the LEFT or RIGHT position, ground from G202 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. The BCM also sends a message via GMLAN to the instrument panel cluster (IPC) to cycle the turn signal indicator ON and OFF depending on the position of the turn signal switch.
Ground for the turn signal lamps is supplied as follows:
• G101 provides ground for the left front turn signal lamp
• G100 provides ground for the right front turn signal lamp
• G302 provides ground for the left and right rear turn signal lamps

The LT T/SIG and RT T/SIG fuses located in the underhood fuse block are also used by the body control module (BCM) for stop lamp operation.
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 both, 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 pedal is applied, the BCM will then apply battery voltage to the left and right stop 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 signals the transmission control module (TCM) and the engine control module (ECM) that the brakes are applied. Ground for all stop lamps is provided at G302.
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.

Did you check the fuse's. ? Wouldn't think it's a ground because right an left tail lamp Assembly's use same ground ! Did you check for B+ voltage at the bulb. with a volt meter ? Power is supplied by the BCM . Could be the tail lamp assembly

Jul 19, 2017 | Cars & Trucks

1 Answer

The brake lights won't turn off


If your rear brake lights are on all the time, I would first check your brake pedal. Near the top of the pedal, probably just about where the pedal is attached to its pivot, you'll see a little switch that is either pressed in or released when you step on the brakes. That's the switch that controls your rear brake lights. As an experiment, have a helper look at the brake lights while you manually pull or push this switch all the way in and out. These switches wear over time and can stick in position. Fortunately, they're not expensive to replace, if that turns out to be the problem.


If your brake light switch seems to be working properly (hard to tell if the brake lights won't go off), a second possibility is that there's a short somewhere in your wiring and your brake lights are getting power from the shorted wire. I think this is a pretty unlikely cause, because most of the wires that rub up against the brake light wiring are for your turn signals and tail lights, and these are not normally energized. If you said that your brake lights always came on when you activated your turn signal or when you turned on your other lights, then this cause would be much more likely.


Check your brake pedal switch and the wire connections to it. I have a feeling that you'll find your problem.

Jun 16, 2011 | 1993 Honda Accord

1 Answer

2007 Cadillac SRX rear tail light stays illuminated after taking foot off brake, also comes on and off, flicker, without brakes depressed.


your brake switch needs adjustment, located down under dash on brake bracket, when the brake is depressed it lets the switch out, and when the brake is not depressed the switch is in. adjust the switch by screwing it closer to the pedal so it gets depressed more, usually 2 turns will do it

Jan 21, 2011 | 2007 Cadillac SRX

2 Answers

When headlight are on and hit the beake pedal only the 3rd brake light comes on the rest are stuck . When i release brake pedal it seems like i am driving with my brake light on . but my headlight off...


It may sound silly, but check your brake light bulbs to see if they have been installed incorrectly. Brake light bulbs have two filaments, one for tail light, and a brighter one for brake lights. On some cars if the bulb is installed wrong, the brighter filament will stay on for tail lights. The only other thing I can think of is the wrong bulbs have been installed.

Dec 25, 2010 | Toyota Camry Cars & Trucks

1 Answer

94 toyota previa brake lights not illuminating


CHECK THE BRAKE LIGHT SWITCH UNDER THE BRAKE PEDAL

Jan 08, 2009 | 1994 Toyota Previa

2 Answers

Brake Lights


The brake lights are engaged by a switch when you press the brake pedal. It is a plunger type switch, then when released, turns on the lights.

It appears that the plunger is not extending and making the connection. Try press on the brake pedal with one hand, and plull out on the switch plunger, see if the lights come on.

You should be able to replace the switch for less than $10


Jun 08, 2008 | 2004 Saturn ION

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