Question about Gmc Dodge Ford Reverse Back-up Sensor Alarm Kit

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Reverse Sensing System always "OFF"

2001 Explorer Limited - RSS does not default to ON as it should when shifting into reverse. If I push the on/off switch on the dash, one press does nothing (OFF light stays lit), next press the "OFF" light on the switch blinks off for about 1/3 second, then comes back on. Green light on switch never lights. Every other switch press the OFF light blinks. RSS started working by itself one time since initial failure, but is mostly off.

I disassembled and cleaned the switch contacts; no change in symptoms. I don't have wiring diagrams, and the user manual doesn't list a fuse number for RSS. Can anyone help? Thanks, ****

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Posted on Jan 02, 2017

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I had the exact same problem. It is the fuse for the brake lights ( a red 10 amp fuse) that is blown. It was the wiring in the trailer that caused it to blow. Replace that fuse and it will work perfectly!!

Posted on Apr 12, 2009

  • 1077 Answers

SOURCE: 1780 code

P1780 Park/Neutral Position Switch Malfunction (Only For A/T)
This code is related to a malfunction with the park neutral position switch, it's located on the transmission.
It maybe easier to get a Chilton manual from the autoparts store to locate the sensor/switch. The book runs about $20.
Replacing the switch/sensor may resolve the reverse light problem also.

Posted on Apr 21, 2009

  • 718 Answers

SOURCE: tail lights and reverse lights out.

Check the bulbs for the tail/brake lights. If you put in single filament bulbs it will be on from the tail light voltage and the brakes will not show.
Try this;
Turn off the lights, press the brake pedal. Look at the brightness of the brake lights.
Now turn on the lights. Look at the brightness of the lights. If is the same as before the bulbs are wrong. You need two filament bulb.

Posted on May 15, 2009

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SOURCE: My 1994 toyota Corolla will not switch out of park

There is a small plasic acess cover (1/2" x1/2") on the base of the shifter. Pry it open and press the button. You should immediately be able to shift. The button is needed because the sensor on your brake pedal is broken (won't activate your brake lights either). Use the button on your shifter to get your car home or to the mechanic so you can get the brake switch fixed. Remember whern you drive you have no brake lights. -Mark

Posted on May 29, 2011

  • 1 Answer

SOURCE: no brake lights, fuses keep blowing and wont shift out of park

I just fixed my daughters car with the same problems. I found some ***** had ininstalled the tail/brake light bulb incorrectly, (that had to be hard) and the two contacts over time had started to make contact blowing the tail and stop light fuses.

Posted on Jun 28, 2012

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