Starting difficulty due to defective anti-theft control module on Kia Sedona

Difficulty starting the vehicle may be caused by a defective vehicle immobilizer (anti-theft) control module.
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Average mileage: 99,756 (12,000–250,000)
13 model years affected: 2002, 2003, 2004, 2005, more2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
105 people reported this problem
72 people shared problem details
2006 Kia Sedona85,000
Turn the key and car won't start. No noise at all from engine trying to turn over. All electrical devices work though, radio, lights etc. Usually have to lock and unlock doors to reset anti theft system, then have to hold key in start position for a few seconds before it starts
Been having problems for last six months. Dealer changed anti theft module three weeks ago. Two day later same issue. Returned vehicle to shop following Monday. Dealer had vehicle two days with no issues. They cleaned terminals on starter and swapped relays. Next day I had same issues twice. Worked fine for 1 week. Then last night issue returned. Sometime have to turn key up to 40 times before it will start.
2006 Kia Sedona89,500
The car starts and runs great but occasionally will not crank. All the proper lights come on the dash, everything else works fine but no crank. It may crank again on the next attemt or not for 10 -20 min. Some blogs say to thump on the relays in the cabin fuse box or the engine compartment fuse box. I have done so and had no luck but then suddenly it will crank and start. I have no clue if the thumping helps or if it is just coincidental.
2011 Kia Sedona80,000
Van will not start, click, or anything. All of the electronics work
2003 Kia Sedona120,000
This van starts when it wants to, if it starts in the morning I can drive it all day with no issues. The next morning it will not start, it will turn over but will not start. Sometimes it will not start all day and sometimes if I wait an hour or two it will start right up. seems strange and has me stumped.
Last November this happened for the first time - turned key, lights all on, engine did not turn over at all. Dealer said poor connection to starter removed, cleaned and re-secured both + & - cables. Van was fine until mid July. Same problem. Dealer replaced relay, still didn't start, now does intermittently. Dealer claims no knowledge of this easily findable problem with the Vehicle Immobilizer Control Module. Huh? Reports been going on for last 10 years!
2006 Kia Sedona81,000
car will start sometimes without a problem. suddenly won't start. dealer confirmed immobilizer control mod.
van won't start have to keep clicking till it will turn over i believe it's in the theft system because it doesn't work anymore
2006 Kia Sedona107,000
Some web site says you have to bang hard and sharply on the area near the fuse box. Sounds weird as a solution, but it works.
2006 Kia Sedona109,000
My '06 well-maintained Sedona is randomly refusing to turn on despite having replaced the battery 5 weeks ago. When I turn the key, all electrical systems are fully functioning but the engine is completely silent. Both times this has happened, it has self-resolved after about 20-30 minutes. Alternator checks out totally fine. Dealership stumped. I will be printing out this thread and taking it in to them. Thanks for the help!
2006 Kia Sedona60,000
Issue starting mini van. Have repair contract. Kia dealership says they know nothing about this issue and can not fix it until it happens in shop.
I remember this problem happening to me previously two times before in the early ownership years. I bought it used in 2010. In the last 3 months, it picked up the pace. I've read several forums and some eluded to the interior fuse panel as the culprit. I have read hundreds of forums relating to various topics. Because of these forums I was able to solve many problems, but I never gave back. Well, today is my opportunity to fulfill that wish. I hope this will help most owners. And remember, this isn't a permanent fix. However, It's a quick one to get you out the Walmart parking where you would otherwise be stranded one late evening. So...enough of the jibber jabber and to the solution. Just turn your key as if you are starting the van. While holding the key in that position and with your door open, swat the left side of your dashboard. When I do this, my van starts right up. Hope yours does too. That's it. Sorry I couldn't be more help towards a solution. From what I can tell, there no recall in place and the repair is expensive and not guaranteed to solve your problem permanently. So have a Blessed Day everyone.
2006 Kia Sedona108,000
Vehicle randomly won't start, keyless remote dying, have to lock and unlock car countless times before vehicle will finally start. Problem occurs whether keyless remote is on keys or no where bar the vehicle.
2006 Kia Sedona150,000
intermittent for a while now. First work around was taking out and/or pushing in the alternator fuse under dashboard, worked for a while then stopped working. Found work around on youtube where i can go to fuse box under hood, take off grey start relay cap, make contact and car starts every time i do this. But inconvenient and no fun in below freezing temperatures.
All Lights turn no bit it Won't star for like 3 hrs first time and second third time it took all day I took it to the mechanic and it star it he said he doesn't know what can be if is staring.
2005 Kia Sedona128,097
Turn key and nothing dealer replaced some fuse inside of dash . not the ones in fuse blocks .he said it was inside of dash they charged $600 now same problem. He will tell me what fuse and where he said it will be another $600. It has been almost 6 months.
2007 Kia Sedona115,000
I have similar symptoms to others on this forum. This is the first time I have had any issues with this van in regards to Starting. I will add: The start relay clicked as well as all of the other electrical working fine, no crank. We had a 20 degree F drop in temp over the last 48 hours here. The ¨no crank¨ happened first thing in the morning. The van lives outdoors. The first thing I tried was to jump it as I thought I had a weak battery. I noticed after a 10 minute charge that the start attempt did draw the other vehicle charging system down which put me in the direction of a new starter. Thanks to the people posting here, I tried all of the other stuff and the van started. Listed are the actions I employed to start the van: 1- Removed and reinstalled the Alternator relay. 2 - Bumped the fuse box inside the van hard with my palm. 3 - Removed and reinstalled the starter relay in the Engine Compartment fuse box. 4 - Turned the key to the Start position while locking and unlocking the doors. After step 4 the van started right up and continues to for now. There is a wiring jumper mod in a Youtube video I will attempt if the problem persists as this van is a get me through. It´s been a fairly decent vehicle. I´m going for a Grand Caravan next...
2006 Kia Sedona80,000
not repaired.weird pain in the neck.
2002 Kia Sedona68,500
Triggered the alarm system couldn't get it to turn over. Get a clicking sound every time I try. It's done this once before and I honestly would rather disable the security system so it doesn't happen again.
2004 Kia Sedona153,000
my 2004 kia Sedona intermittently refuses to start. I have light, radio, electric windows but just doesn't turn over at all. If I leave it a few hours and go back to it, it'll start first time as if nothing was wrong. I've tried getting out locking and unlocking, or using my spare key thinking its an immobilizer problem but nothings seems to instantly work. Apart from this the vehicle runs fine and can be fine for weeks before happening again Any ideas?
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