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Immobilizer fault, car cranks over will not start

Tiny
MINIDISC7
  • MEMBER
  • 2005 HYUNDAI GENESIS COUPE
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 75,000 MILES
As above the car will crank over but will not start.
image of a car with a key through the middle of it illuminates on the dashboard blinks three times and goes out.

Also, the central locking has stopped working.
If anyone has any ideas I would be very happy to hear them. Many thanks in advance. Mark
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Monday, January 15th, 2018 AT 2:03 AM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
If the non starting occurred immediately after the central locking system stopped working, the problem is most probably related and could be due to a blown fuse for the security system.

Start with a check on the fuses and replace if any found bad.
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Monday, January 15th, 2018 AT 9:17 PM
Tiny
MINIDISC7
  • MEMBER
  • 3 POSTS
Many thanks for the reply. This check has been done and no fuses were found to be blown, the other work carried out was to have both keys and fobs checked by an auto locksmith and he confirmed that the transponders in the keys were operating as they should.
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Tuesday, January 16th, 2018 AT 12:30 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Initial checks passed means we have to go further up the chain to diagnose the problem and locate the source.

https://www.2carpros.com/articles/car-cranks-but-wont-start

The link above explains how to go about looking for causes and what should be present when getting the engine to start.

Let us know what you find.
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Tuesday, January 16th, 2018 AT 9:34 PM
Tiny
MINIDISC7
  • MEMBER
  • 3 POSTS
Many thanks again, I'll study the link and refer back to you, Cheers
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Wednesday, January 17th, 2018 AT 4:02 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,883 POSTS
Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Friday, January 19th, 2018 AT 11:30 AM

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