2016 Jeep Renegade

VIBRATING/RUMBLING NOISE THROUGH GAS PEDAL AND REAR DIFFERENTIAL BETWEEN 29-34 MPH WHILE USING CRUISE/NOT USING CRUISE/LETTING OFF GAS PEDAL SLOWLY; DEALERSHIP CLAIMS ITS THE HIGH GEARING, ITS NORMAL, WE CANT REPLICATE, CHRYSLER REP STATES THE SAME THING, YET I TAKE THE SERVICE MGR FOR A RIDE AND THERES THE NOISE, TAKE SERVICE MGR FOR A RIDE IN ANOTHER RENEGADE AND THERES THE NOISE, SUPPOSEDLY THEY WILL WORK ON FIGURING OUT WHATS THE ISSUE ON THE OTHER RENEGADE AND THEN DEAL WITH MINE. DIGITAL SPEEDOMETER FLUCTUATES BETWEEN +/-1 MPH UPON SETTING CRUISE ON LEVEL ELEVATION, SETTING CRUISE SPEEDOMETER IN CENTER DISPLAY WILL READ 69 MPH BUT UPPER RIGHT SPEEDOMETER DISPLAY REFLECTS 70 MPH AND ONLY TIME THEY EVER ARE THE SAME IS WHEN YOUR GOING DOWNHILL, CHRYSLER REP AT WI DEALERSHIP STATES THIS IS NORMAL AND I AM CALLING BULLSHIT, THEY WONT FIX IT BECAUSE ITS WITHIN THE NORMAL PARAMETERS BUT SCIENTIFICALLY IT DOESNT JIVE.

MY CAR "SERVICE ENGINE" LIGHT CAME ON AS WELL AS A MESSAGE ON THE DASHBOARD WITH THE WORDS "SAFETY ASSIST" AND "SECURITY". I IMMEDIATELY BROUGHT THE CAR TO THE DEALER. AFTER 2 DAYS IN THE SHOP, THEY SAID IT WAS (AS POSTED ON THE PAPERWORK RELEASED TO ME) "CYLINDER 3 MISFIRE AND COLD START ROUGH START. FOUND CYLINDER 3 PLUG FOULED OUT POSS FROM MOVING VEHICLE ALL WINTER WITHOUT EVER DRIVING VEHICLE. REPLACED #3 SPARK PLUG, SWAPPED COIL #3 WITH COIL #2 TO SEE IF MISFIRE MOVES TO CYLINDER #2. THIS WAY IF CONDITION IS NOT RESOLVED, I WILL KNOW IF COIL IS BAD OR ENGINE HAS A MECHANICAL PROBLEM. RFH FLASHED AND ABS FLASHED" THEY RELEASED THE CAR TO ME AND SAID IT WAS FIXED AND SAFE. UPON DRIVING TO WORK AT 5 AM, IN THE DARK, I HAD NO EXTERIOR LIGHTS AND COULD ONLY USE MY HIGH BEAMS IF I HELD THEM ON. I HAD NO BACK LIGHTS. CARS APPROACHED VERY CLOSE TO MY CAR AND I HAD NO IDEA WHY. WHEN I GOT TO WORK, I HAD ANOTHER WORKER CHECK THE BACK OF MY CAR AND THERE WERE NO BACK LIGHTS OR BRAKE LIGHTS. I CALLED THE DEALER AND LEFT A MESSAGE AND DROPPED THE CAR OFF AFTER WORK. AFTER FURTHER REVIEW, THEY HAVE NOW TOLD ME THE ENGINE NEEDS TO BE REPLACED....ON A 2016 CAR. RIDICULOUS. THANK YOU *TR