TSB – No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM

NUMBER: 08-007-08
GROUP: Electrical
DATE: March 04, 2008

No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM

This bulletin involves the replacement of the Wireless Control Module (WCM). The WCM is
also referred to as the Sentry Key Remote Entry Module (SKREEM).

2007 – 2008 (JK) Wrangler

NOTE: This bulletin applies to vehicles built on or before November 30, 2007 (MDH 1130XX).

The customer may experience a no engine crank and/or a no engine start condition. Also, the remote keyless entry (RKE) system may not operate. This condition may be due to an electrostatic discharge (ESD) from the ignition key into the Wireless Control Module (WCM), causing the WCM to electronically lockup. This condition may occur more
frequently in dry and/or cold weather conditions where a sufficient electrostatic charge is more easily produced. This condition is corrected by the replacement of the WCM.

Until the WCM is replaced, the WCM may be reset (unlocked) by either: disconnecting and then reconnect the battery negative cable at the battery, or by removing the IOD fuse (with the key out of the ignition switch), waiting 30 seconds, and reinstall the IOD fuse.

TSB 08-007-08


  1. i had this problem back in january, it sucked. i didnt know what to do. i had it towed. thanks to the forum ill know what to do for next time.

  2. I’ve had this problem twice. Got towed both times. They replaced the WCM the first time and said they replaced it with the new, improved one. The second time they said it was because the new, improved one was actually made with the same faulty parts. Hasn’t happned since though.

  3. I’ve been hit by this 5 times in less than a year. they finally replaced the WCM a few months ago and have only had 1 of the two keys suffer the issue since. I’m in Colorado however and winter is on the way so we’ll have to wait and see if the cold has any effect. Thanks for the IOD/Battery recovery advice – it might prove very useful.

  4. I wish I would have read this TSB before this past weekend…just had it happen to me. I checked all the fuses and really just wasn’t sure what else to do. I had it towed to the dealership that I purchased it at, which just happened to be down the street. However, I had to wait about 1 1/2 hours for the tow truck, only to find out that I could have down one of the two options above and drove it to the dealer myself. I just got it back today and they replaced the WCM…we’ll see what happens…at least now I know what to do if it happens again. Thanks for posting this information.

  5. I think we should all come together and stand up against chrysler. Why should we have to pay $349.00 for their faulty parts?

  6. My 2008 Saharahas been experiencing this problem for a year now. I discovered my own remedy by pulling the key from the ignition and wiggling the transmission shifter while in park. Turn over Key into ignition- starts everytime. Still this defect is annoying and should be recalled as it could leave many JEEP owners stranded…

  7. bought a jeep wrangler 2008 has no start issue had the starter replaced, skim modual replaced aka WCM 3 new keys remote starter, all new plugs just cause. still no start probleml took to another mechanic he claimed that the WCM is the problem called the dealer explained that the WCM is still acting up the dealer said no way and they cant help us out becuase it is 3 months past when we bought the jeep we also live 300 km away from the dealer so now the dealer we bought our truck from we are payng them to figure out whats with the no start they said if the computer was acting up the jeep wouldnt start at all in the meantime the truck also over heated about a week ago due to the thermo was jammed closed and the temp gauge in the dash doesnt work and it poped some gaskets so about a 1000$ bill with a discount becuase of extras oil change and coolant flush and shop equiptment. But they still cant figure out the no start issues but now im worried the jeep overheated becuase of the wcm having problems and that the real problem is something computer related, i get the overheating problem needed to be fixed no matter what but why doesnt the damn thing start every freaking time?? if anyone has gone threw this please let me know what i need to do to get someone to fix this damn thing it cost 17,900 and its only 3 months old only has 98000 km now bought with 89,000 km and looks great taken care of regulare mantaines done on time. and my wife drives it everyday when it starts and i take my truck so you can imagine her frustration boiught 3 months ago and nothing but problems anyone got any ideas??? innesmark@live.com please email me and let me know. thanks

  8. Have you ever heard of the SKREEM causing erratic behavior of other systems?

    1) Unlocking all doors BUT the driver’s
    2) Honking the horn on unlock
    3) Triggering windshield washer
    4) Triggering windshield wiper
    5) NOT turning on the lights

    6) Any combination of the above OR all of the above simultaneously.

    Is it the SKREEM, or is it the BCM getting a screwy signal?

  9. Sounds like whats going on with mine. My mom was having a heart attack and all of a sudden starts and shuts off then wouldn’t crank. Got my mom to the hospital once she got stable i got taken back to my jeep where it still wouldn’t start followed by the battery instantly draining mixed with a dead cell phone battery equaled a full day in the heat with no fluids one person stopped and offered a jump start which did nothing as far as my jeep starting the person who stopped had no phone (had i been thinking clearly ,id of been using there battery to charge my phone so i could get to my contacts) she didnt want to give a stranger a ride which is fully understandable. Day two i walked 5 hrs two a Wal-Mart and 7 hours back due to carring what felt like a hundred lb battery which was enough for me to charge my phone and get a friend to come tow me back to civilization where my 2009 jeep has sat parked for almost 3weeks now

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