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: 93,055 (12,000–166,000)
11 model years affected: 2002, 2003, 2004, 2005, more2006, 2007, 2008, 2009, 2010, 2011, 2012
48 people reported this problem
28 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
15 people like thisFlag inappropiate
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.
9 people like thisFlag inappropiate
2006 Kia Sedona81,000
car will start sometimes without a problem. suddenly won't start. dealer confirmed immobilizer control mod.
7 people like thisFlag inappropiate
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!
5 people like thisFlag inappropiate
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.
4 people like thisFlag inappropiate
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.
4 people like thisFlag inappropiate
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
4 people like thisFlag inappropiate
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.
2 people like thisFlag inappropiate
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.
2 people like thisFlag inappropiate
2006 Kia Sedona80,000
not repaired.weird pain in the neck.
2 people like thisFlag inappropiate
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!
1 person likes thisFlag inappropiate
2012 Kia Sedona65,000
Vehicle was working fine stopped at gas station to fuel up and car wont start back up at allcar wont go out of park.
For about a year or so our 2006 KIA Sedona LX Van when trying to turn on the ignition it would not make any noise at all but the dashboard was lit. We would have to try several times turning the ignition on & off for at least 4 to 5 times or more before it finally turned on. It did this intermittently for several months. The Dealership had sublet to a Lock Company to clean & repair Key Lock Assembly. It was okay for few months but the problem started again intermittently. June 2015 I was driving the van probably 3 to 4 miles the vehicle shut off while I was driving. The van was dead. I towed the vehicle to the dealership for repair. They replaced the ignition coil wire harness. Van was fine for about two weeks and it started again with not starting. I had the same problem. I ended up leaving the van at the dealership for two days and of course it did not do it for them. So they are not able to diagnose it. I strongly feel this is a manufacturing defect.
This POS has done nothing but give me headaches......
Unable to start car
2012 Kia Sedona40,000
2012 KIA Sedona would crank but not start. Tried the second key provided with car when new. Car started and the problem did not return when using that key. Reconfirmed first key would not start the car. Transponder in first key obviously went bad. Will replace first key at dealer and have it coded to car.
2006 Kia Sedona120,000
I'm having the same exact problem.
2006 Kia Sedona115,000
Intermittent problem where car runs great but sometimes fails to start. When I turn the key I get silence. Starter does not engage. All accessories still have power. Taken it to two different repair stations one if which was Kia Dealership, but neither could diagnose the problem. Yesterday my wife stopped to get gas and after filling up the tank the car would not start. After about 50 attempts, without rhyme or reason, she turned the key and it started. Don't know if it's the anti theft control module or something else, but we've about had it.
2008 Kia Sedona90,000
same problem-wont crank /start at random times-dealer plays stupid like this is the first time seeing this
2004 Kia Sedona150,000
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