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Old 09-03-2014, 06:00 PM
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2011 WK2 - Overnight battery drain and fuel pump noise

Hi all.

Just got my 2011 WK2 Overland with 85K kms back from the garage.

Two days ago the truck was completely dead after leaving it over night. Remotes wouldn't open the doors, no lights on the dash. Boosted it and then it ran fine the entire day. After leaving it the second night, same thing, completely dead. Boosted it and took it to the dealer... now the alternator light had come on.

Dealer said 60 codes were in the ECU. They reflashed the TIPM, HVAC, etc etc... and said the draw on the batter was only 0.018 so all seemed fine after the reflash.

I just got the Jeep home and it's been parked for 45 minutes and a constant hum is coming from the gas tank/fuel pump? I'm wondering if this is what caused the drain? Here's a link to the video and picture of where the hum is coming from. (rear drivers side)


2011 jeep wk2 - YouTube
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Old 09-03-2014, 06:02 PM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

Quote:
Originally Posted by cheneymatthews View Post
Hi all.

Just got my 2011 WK2 Overland with 85K kms back from the garage.

Two days ago the truck was completely dead after leaving it over night. Remotes wouldn't open the doors, no lights on the dash. Boosted it and then it ran fine the entire day. After leaving it the second night, same thing, completely dead. Boosted it and took it to the dealer... now the alternator light had come on.

Dealer said 60 codes were in the ECU. They reflashed the TIPM, HVAC, etc etc... and said the draw on the batter was only 0.018 so all seemed fine after the reflash.

I just got the Jeep home and it's been parked for 45 minutes and a constant hum is coming from the gas tank/fuel pump? I'm wondering if this is what caused the drain? Here's a link to the video and picture of where the hum is coming from. (rear drivers side)


2011 jeep wk2 - YouTube
If I recall correctly, I believe it's an issue with a bad fuel pump relay?

You can go over to wk2jeeps.com and look for the TSB on it.
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Old 09-03-2014, 09:27 PM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

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Originally Posted by MDBones View Post
If I recall correctly, I believe it's an issue with a bad fuel pump relay?

You can go over to wk2jeeps.com and look for the TSB on it.

Went through the entire list... nothing there. Only one post about dead battery, however the TSB was only in relation to the wrong post being used to boost the battery?!
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Old 09-05-2014, 09:34 AM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

this is the beginning signs of a bad fuel pump. you have to get the float and pump assembly it’s all one piece. change it before it leaves you stranded. Pump stays stuck on and put a drain on the battery and will then put a load on the alternator. depending on how long this has been going on the battery could be bad and causing the light to go on. you can disconnect the battery post to save the battery in the meantime. hope this helps.
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Old 09-05-2014, 09:46 AM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

Soon to be a recall:
TIPM Recall
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Old 09-05-2014, 09:54 PM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

Video of Jeep not starting, hesitating, stalling, sucking.

2011 jeep wk2 - YouTube

Dealership is currently trying to find the following parts.
-wiring harness: 68142156AA
-holder: 682176670AA
-fuse: 000ATC20
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Old 09-06-2014, 09:36 AM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

That video looks like it could be me. Started the second try and took it to the dealer. Couldn't find any codes but I now have a record of the complaint if it happens again. I haven't had a recurrence and that has been several months now.
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Old 09-07-2014, 10:24 AM
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Re: 2011 WK2 - Overnight battery drain and fuel pump noise

Quote:
Originally Posted by infinitied View Post
this is the beginning signs of a bad fuel pump. you have to get the float and pump assembly itís all one piece. change it before it leaves you stranded. Pump stays stuck on and put a drain on the battery and will then put a load on the alternator. depending on how long this has been going on the battery could be bad and causing the light to go on. you can disconnect the battery post to save the battery in the meantime. hope this helps.
So the dealer checked the signals coming from the TIPM to the fuel pump relay and this is where things are going awry. As many have reported there are two solutions:

1. replace TIPM ($$$ - to the tune of $1300)
2. put in relay to bypass faulty TIPM Fuel Pump Relay ($ - $70 in parts, 1-2hrs in labour)

Not sure how long it takes for a recall to go from a "trusty source" on a forum to being communicated to us owners, so I've opted for the fuel pump relay trick.

So nothing wrong with the fuel pump in our vehicles it's purely that stupid fuel pump relay in the TIPM. I've found the Star Case report a couple times, but can't seem to round it up. It gives step by step instruction on how anyone with a little wiring knowledge can bypass the TIPM relay.
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