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Old 11-02-2012, 06:45 PM
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ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

This all started after I got the tires replaced... and of course the shop says they did nothing that could have caused it...
I am getting an erratic ABS light with the message "Service Elec Brake System" and the gas mileage goes to crap. When the lights come on the jeep feels like I have to force it to move and when I take my foot off the gas it slows down quicker than normal. I cant figure out if it is the brakes or the tranny downshifting or not shifting???? I did get a WSS code for the right rear but it cleared after I cleaned it.. figured they got brake dust on it when they replaced the tires. I am STUPMED
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Old 11-02-2012, 08:16 PM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

on my jeep i got all of this and it was a wheel speed sensor.
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Old 11-02-2012, 08:29 PM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

definately a wheel speed sensor
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Old 11-03-2012, 06:55 AM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

Thanks gentlemen! I will replace and update!
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Old 11-03-2012, 10:10 AM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

check for codes. on mine the code came back as left rear speed sensor.
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Old 11-04-2012, 09:48 AM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

I was wrong... mine is also the left rear sensor... I am going to replace it and see if it fixes the issue. Thanks
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Old 11-05-2012, 11:16 PM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

so far so good!! looks like that did the trick. Thank You all for your input!!
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Old 11-05-2012, 11:30 PM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

Glad you got it resolved.
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Old 02-23-2013, 08:27 PM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

Hey guys I started to get this exact thing with my 05 Grand Cherokee. But in addition I also get all my interior dash lights and such all light up at once and flash and then stop for a bit. The dash lights flicker out too then come back.
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Old 03-07-2013, 10:42 AM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

the ABS light and service elec brake system came up on my wifes 05 2 days ago (she neglected to tell me) and this morning the left rear brake is locking up. I tried to go from a stop and the it locked and I had to drag the wheel around the corner to a parking spot. the traction control light is also on and I'm getting a service 4 wheel drive system warning.

Any ideas?
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Old 03-07-2013, 10:56 AM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

the ABS light and service elec brake system came up on my wifes 05 2 days ago (she neglected to tell me) and this morning the left rear brake is locking up. I tried to go from a stop and the it locked and I had to drag the wheel around the corner to a parking spot. the traction control light is also on and I'm getting a service 4 wheel drive system warning.

Any ideas?
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Old 03-07-2013, 12:18 PM
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Re: ABS light and "Service Elec Brake System" and gas mileage gone to 6mpg

Falty wheel speed sensor
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