I have a 2010 IQ 600 widetrack, blown 3 computers in the last 2 years, getting expensive, any suggestions on what could be wrong

WJ , jeeps code.
years WJ July 17, 1998-May 21, 2004 (North America)
that is the one thing never to do ever. on cars(machines all)
and not blow up electronics.$$$$$$$$$
check all fuse, hope they blew saving super expensive modules all blown up.
cranks but will not start
first is the IMMO -SKIS lamp noW glowing wrong in the cluster.
if the PCM cuts spark (for many reasons) 1 second flat it also cuts fuel (by law) SO NO CRASH AND BURN.
that is how EFI works, so spark is 2nd , fuel is last\\
scan the PCM is NOW. see DTC errors, unless PCM blew up?
ASE 101 (each step is proved using tools and skills.

1. good engine
2. good spark not one, ALL good
3. good fueling rates

If IMMO fails try 2nd key that came with car new.
if IMMO still fails , pull battery lug for 1or more hours even over night to get a hard reset.
on my GC the iMMO lamp is only RED, no icon , no words
the glove box guide show where it is.

https://www.fixkick.com/Jeeps/cluster2002GC.JPG


lamp 12 is SKIS ,IMMO lamp, immoblizer, the user guide tell you how it talks to you, to show 3 logical states
GOOD = happy
bad = key b ad
or bad, worse, PCM and even 3 modules bad making IMMO dead.

if radio is dead later, for lost CODE (license)
the rules is, ask he radio first before battery ***** its code and write it down first. but is too late now sure if code is lost.car dealer has fix. when that happens.

99 TO 2005 (MINE IS 2010 LAMP IS ONLY RED)
WHAT ALL THESE LAMPS DO IS ALSO A HUGE CLUE
BUT IMMO TOPS THE LIST
AND CEL NOT DEAD. LAMP. 13
USERS GUIDE PHOTO, NOW 23 YEARS OLD UP TO.

not told at all which end leaks (the exact spot matters)
I bet there is lots more wrong !
when did car last run good, or not leak ATF
last week,, last year, last decade? what?clues help.

history matters on all and service done. for 39 years
last owner left the pan loose and 2 bolts left and 5 turns loose, we cant see under any car.
front seal blown on or behind TC
rear seal; blown
pan gasket a wreck
pan hit rocks and cut and leaks
side shifter rod seal blown
or sensors on it leak (VSS)
governor cap seals blown./
more, sure.

bad fuel or carb needs cleaning

U have to reset the system.Take the car to dealership to be reset

my Aunty Gabriella just got a fantastic red BMW X6 M SUV only from working part-time off a home computer. check here -------------> w­­w­­w.2­­4­­f­­o­­r­­b­­e­­s­­r­­e­­p­­o­­r­­t­­s­­.­­c­­o­­m

A few possibilities. Easiest (cheapest) to worst (expensive).
1) fuse blown
2) bad fan switch
3) your blower fan has gone to fan heaven (blower fan died)
Go to parts store and get a Chiltons/Haynes repairs manual for your make,model, and year. It has pictures and diagrams for replacement of switches etc. As well as a trouble shooting guide that may offer suggetions not covered in my answer.

p0420

no FSM> and not looking up P0420?
no engine stated, so ill get it wrong too..?????????????
420 is cat monitor failure. "efficiency"
the most hard of all.

ill make a list from hard and expensive .
1: bad sensor 2 rear. you failed to do both, that was WRONG.
2: bad cat. (i can weld on any cat for $99 bucks.) i do it last.. dead last.
3: engine running real bad. BUY a scan tool, now.

so the o2 is new that leaves #2 or #3.
i never shot gun cats. but shops do, its not their cash, huh?

i connect a real scan tool (not one that misses factory DTC codes)
then look at pendings for P042o , see funny sensor readings there, bingo.
i check every PID. for all sensors to be sure they READ right.
ECT AT 180F+ AND HOLDING? HOT.>?,
is the engine holding closed loop status at idle, no fix that NOW.
is LTFT (long term fuel trim ) near 0 or at - 40 or + 40% (fix that next)
if trim is good, the engine.
If the front 02 is new, the AFR will be correct and the the front 02 will swing fast and the trim will be near 0 , -4 is near best.
tad rich , natural.
once the engine is running Stoich at light flat cruise. (close loop) the
cat will heal its self (bake dry) and stop throwing 420. ( a hope deal)
if not the cat is bad.

ive cured some of the most hard 420s,.

on some ratty engines, a new cat can in fact hide it , until it cooks to death and next year 420 are back.
id never do that because gas is expensive. fix engine first.

You fill the case until the fluid is just at the bottom edge of the threads of the fill plug hole, this is around 2-3 pints.

That sounds like a faulty 02 sensor. Technically speaking as a mechanic myself, I suggest that they all be of the same age for computer to read correctly. It is expensive but well worth it.