No crank with key will when you jump starter?

there are 6 to 8 cause of no cranks
posted them vast time here even added tips and they all failed.
battery cables x3, 2 lugs each end , 4 lugs loose or rusty or both.
then comes jumper cable jump starting any car.
call AAA CLUB tow say jump me or buy your own cable sets.
or load test the cars battery now.
ok battery good and charged

• key switch bad. some cars the IMMO cuts cranking so the IMMO lamp is always looked at first (chevy trick but who knows?)
• next PRNDL switch bad. car cranks in park and neutral both so try Neutral as the uses guide states,. and does.
• starter relay bad.
• Starter is bad. (we hot wire test in key in pocket , ask)
• all wire to all things stated above bad.

the hot wire starter test passing prove battery and starter are good
and hearing this
https://freesound.org/people/drdeath666/sounds/687447/

note the speed of starter ,if super slow the PCm and spark and fueling can fail at 10vdc, battery under load.

so all shop makes sure the battery is good first.
or jumper cable jump it as the cables instructions state
and NEVER CONNECTED BACKWARDS OR BOOM GO BROKE.

the starter motor is dead, silient, ?????
cranks in Neutral but not PARK>?
key on, and the IMMO lamp not angry (immobizer)?key failing?
Will not crank
or cranks fast but will not start, and run or stay running or only runs for 3 seconds (IMMO loves to to the 3 sec,. jive)
be more clear on the stater electric motor.
the starter actual can be hotwired easy if dead, (it)
jump big lug on starter to tiny lug.

• key off in pocket.
• in park
• wheels chocked
• .Pull small term. wire off first is wise. seen below
• jump big to small like this, (using even an old screw driver to jump)
• starter works and cranks but engine does not run is normal here.

Could have faulty starter relay that provides crank signal voltage to starter when key is turned to start. Assume the no voltage to plugs or fuel pump performed when jumping the starter directly at the starter. Was the key turned to run position? Needs to be or no power to rest of system.

First let's define some terminology. The job of the starter motor is to "crank" the engine, if it does this, weather the engine runs is going to depend on the fuel system and the ignition system and good compression. Try this: with one hand, hold the key it the "crank" position, with your other hand, move the gear shift (slowly)from park to reverse to neutral to drive. Make sure you foot is on the brake as it may start in gear. If it starts while doing this, you have a bad neutral safety switch.
Also, It wont stay running when you crank it by jumping the starter if the ignition switch is off. Try doing it again with the key on. If it starts with the key on, and you jumping it at the starter, you probably have a bad, or out of adjustment, ignition switch. If it does not start, with the key on and cranking by jumping the starter, then you probably have a fuel or ignition problem.
Try the above and get back to me. I can walk you through how to check for fuel and spark if it still wont run.

post is good and clear, no engine size stated.>>>
can you jump start it?//
this simple check proves battery is good /bad or just discharged.
yes, jumps and runs. (ever clean the battery lugs ever?
if it jumps the battery is bad/or disharged, so charge it.
no, wont jump cold
bad starter. or funky key line.

1: i hot wire these starters,
cranks ok, good starter.
no crank bad key line
if key line is dead, well wiggle the key and wiggle the gear shifter.
is car a A/T or M/T.
if M/T wiggle the clutch.
now you have your answer, an why. how is a differnt horse.

no crank
1: battery dead, not charged. does it jump crank?
2: bad battery (corroded clean em) cables lugs. (4 ends)
3: bad starter /solenoid, assembly
4: engine seized, (turn it by hand you cant?)
5: bad key line, (from key switch to PRNDL to stater , no connections)

jump start it, if passed test, battery bad/discharged , and if fail?
you then (battery is good)
hot wire the starter solenoid, keys in pockets
fail? yes, bad starter, seized engine. turn by hand , now you know.
if passes hot wire test, bad key line. (tiny wire)

easy huh?

ill answer for NO ELECTRICAL POWER :
sure and is easy with any DMM meter, got one? any $20 DMM.
my guess;1
engine will not crank
dash lamps out.
head lights out. dead.
post systems of electrical system , all parts that work and those that dont work, and problem is easy.
cleaned battery terminals.
tried borrowed battery that reads, 12.6vdc ? (charged is 12.6)
2012 that is in warranty car.... ?
my guess on 2012
jumping a car, that is battery jump starting.
a battery can short, and no jump start on earth will start shorted battery in car. but does lay down some big sparks, or burns up cheap walmart cables.
if the car will not crank, say just that, my starter motor will not crank
jump started from live running other car.
if true then make sure headlights work , if they dont work fix that first.
HL must always work, even keys in pocket.
best is to put a fully charged battery in the car, jump starting can cause
surges that can damage sensitive electronic$$$, do jumps as a desperate measure,
with a charged battery,
1: Head lights work, no fix that , use voltmeter
2: cranks robustly.
no , wiggle shifter lever, (on A/T cars the park switch blocks cranking) On M/T the clutch blocks cranking.
with any dMM
measure battery voltage before crank and during.
12.6v good. reseted.
cranking.
0 to 10v bad (weak battery or shorted starter motor)
11 and above good. and must crank, if not , starter is bad.
to prove starter is bad, check voltage at starter solenoid coil wire lug.
it must be at 11v cranking , below 8v it chatters, and fails.
if at 0v cranking this lug that means the Key start line is failing.
A/T switch not closes, or bad ignition switch.

wont crank or wont start.??
no car starts , if it cant crank. (unless push starter (M/T magic)
that is not a trans sensor its the PRN switch.
ill answer for, wont CRANK !
it wont crank even with a good battery (charged) or jump started.
1: bad start
2: bad wires to same.
so hot wire the starter small wire, the key start line is tiny.
cranks. , starter good, no crank starter bad or cables bad.
if it cranks hot wired, then the key line is dead.
easy, huh?

Yes there is a starter relay in the wiring diagram.
The yellow and lite blue wire goes from the starter solenoid to the relay. There is a yellow wire from the relay to a 30amp fuse. The key switch powers thru the neutral safety switch and then powers the relay on.

sounds like your contacts in your starter have froze shut it is time to replace the starter