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Cannot turn ignition on, BCM replace and it was still doing the same?

Tiny
MALLYBOY
  • MEMBER
  • 2011 LAND ROVER RANGE ROVER SPORT
  • 5.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 116,574 MILES
This vehicle started this problem after being pack for seven years and came back to start the vehicle and this vehicle started this problem. What's the cause of this problem?
Wednesday, March 20th, 2024 AT 4:54 PM

11 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi,

Take a look through this link first and let me know if anything is helpful. If not, the cylinder may need to be replaced. Additionally, make sure the battery is fully charged.

https://www.2carpros.com/articles/ignition-switch-wont-turn-stuck

Also, please confirm the engine size for me. No 5.6L is an option. The sport comes with a 5.0L.

Take care,

Joe
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Wednesday, March 20th, 2024 AT 6:17 PM
Tiny
MALLYBOY
  • MEMBER
  • 305 POSTS
Cylinder may need to be replaced. No, it does not use key but keyless system.
Note: Engine capacity is 5.0L V8
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Wednesday, March 20th, 2024 AT 10:28 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

If it is a keyless system, what cylinder are you referring to?

Let me know.

Joe
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Thursday, March 21st, 2024 AT 8:21 PM
Tiny
MALLYBOY
  • MEMBER
  • 305 POSTS
It is from your previous post "If not, the cylinder may need to be replaced. Additionally, make sure the battery is fully charged". What are you referring to by cylinder need to be replaced?
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Thursday, March 21st, 2024 AT 9:28 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi,

When you indicated you couldn't turn the ignition, I assumed it had a traditional type key. I was unaware it was a push-button start.

Let me know.

Joe
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Friday, March 22nd, 2024 AT 8:47 PM
Tiny
MALLYBOY
  • MEMBER
  • 305 POSTS
I was unaware it was a push-button start. Yes, it was a push-button start.
So, what will I do in this situation?
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Friday, March 22nd, 2024 AT 8:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Because it is a push-button start, the first thing I would do is check for diagnostic trouble codes. Scan the can-bus to see if there is anything stored.

Here is a link that explains how it's done:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Let me know if that is something you have already done.

Joe
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Friday, March 22nd, 2024 AT 9:31 PM
Tiny
MALLYBOY
  • MEMBER
  • 305 POSTS
Scan the can-bus to see if there is anything stored.
How can you scan a vehicle that when you press the push-button, no light will appear on the dashboard showing that ignition was turned on?
With the new BCM installed and push-button pressed, a light will flash saying "key not found".
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Friday, March 22nd, 2024 AT 11:32 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

When you replaced the BCM, did you restore communication to the CJB and update/program the new module?

Joe
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Saturday, March 23rd, 2024 AT 7:03 PM
Tiny
MALLYBOY
  • MEMBER
  • 305 POSTS
Can program a module when the ignition is not turned on, everything I am doing now is for ignition to turn On. Use the ignition diagram to check how to turn ignition on before programming.
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Sunday, March 24th, 2024 AT 1:41 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi,

I don't know if it will help you or not, but I attached the wiring schematic for the starting system. It appears everything comes from the BCM.

Let me know if this helps.

Joe

See pic below.
Image (Click to make bigger)
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Sunday, March 24th, 2024 AT 6:05 PM

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