Turn signal sometimes flashes both rear turning lights
Sometimes when signaling a turn, both the rear passanger and rear driverside turn signal lights flash together as if the emergency flasher was turned on. The problem is does not occure consistantly. I own a 2000 Jeep cherokee sport 4.0L 4WD/ 6cylinder
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I would change out the turn signal bulb on the right front. A blown bulb can cause the fast flash issue. The signals staying on is not related to the bulb being blown. That is most likely a problem with the multifunction switch, the knob you use to signal.
The rapid flashing occurs because of the light problem. If the 20A PARK LP fuse in the underhood fuse block is OK, the front marker lamps and the park lights should turn on when you set the headlamp switch to PARK. If the 10A T/SIG fuse in the instrument panel fuse block is OK, and the ignition switch is on, moving the turn signal multi-function switch to signal a right or left turn should cause the turn signals to flash. If this doesn't happen, check for a missing ground connection to the socket you replaced and check to be sure the replacement lamp was not forced into the socket backwards (it happens).
replace flasher......usually located in fuse block area...listen in this area....select passenger side ...then select driver side...you can hear flasher clicking...you have seperate flashers for each...FLASHERS are small cubes plugged into fuse block....probable bad driverside flasher