i think the battery is not doing well it may cause problem in most cases that car doesn't start as it usually did.
so check the battery first and keep it cool. PREVENTATIVE VEHICLE MAINTENANCE
My Jeep cherokee 2003 won't start ? it got steadily worse over 2 days and now won't start at all. I don't think its heater plugs because it wouldn't start with a hot engine ?
Is it a sensor some where ??

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