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Old 09-06-2024, 04:46 AM   #1
lynyrd
 
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New battery, but it won't start (resolved)

Hello,
I had battery problems, I put a new one charged at 14.5V,
Everything lights up, but it does not start, it asks me to put myself in mode, "Parking". while it is already there. the "Parking" mode is blocked, the lever does not move.
Is there a fuse or something that would prevent it from starting?
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Last edited by lynyrd; 09-07-2024 at 07:55 AM. Reason: resolved
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Old 09-06-2024, 05:41 AM   #2
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Maybe the battery cranking amps is too low?my car battery had to be a minimum 950CA
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Old 09-06-2024, 06:04 AM   #3
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760 (or even 700) CCA is plenty, nothing wrong with that battery. When my original battery was down to 450-460 CCA, it was still able to crank the engine every time.

OP, if you can't shift to park, the engine won't start, you need to address that problem. Is the shifter in the P position (meaning the gear sensor may be broken), or are you saying even that is locked out (mechanical failure)?
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Old 09-06-2024, 06:20 AM   #4
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Quote:
Originally Posted by arpad_m View Post

OP, if you can't shift to park, the engine won't start, you need to address that problem. Is the shifter in the P position (meaning the gear sensor may be broken), or are you saying even that is locked out (mechanical failure)?
Yes, it is in "Park" position and impossible to move it, it is stuck!
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Old 09-06-2024, 06:39 AM   #5
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Is this the "shift to park" message that comes up, and it won't let you start?
There is an interlock switch in the shifter assembly that senses when shifter is in park. You can try jiggling the shifter. You can remove the bezel around the shifter and people have "cleaned" the switch with wd-40 which is not what I would use for electrical cleaning.
Search for "shift to park."
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Old 09-06-2024, 07:10 AM   #6
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Quote:
Originally Posted by ctrlz View Post
Is this the "shift to park" message that comes up, and it won't let you start?
Yes, it asks me to put it in park.
I saw a video to remove the park position, there are two methods.
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Old 09-06-2024, 09:41 AM   #7
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Quote:
Originally Posted by lynyrd View Post
Yes, it asks me to put it in park.
I saw a video to remove the park position, there are two methods.
That will let you move the shifter, but the car will still want to sense the "park" position to let you start.
Apparently the microswitch is not serviceable. I will see if I can find the wiring diagram that will let you bypass this.

EDIT: Not much wiring within the shifter itself.
You have two units:
1) Park position switch with black and purple wires.
2) Transmission shift lock control solenoid actuator with black and red wires.

Looks like when it's in park, the park position switch connects black to purple. These wires connect to wire 6 (white/violet) which is labeled "key capture/column lock shift position signal" and that signal goes to the shift interlock system.

Some people here think the problem with the shifter may be poor grounding, and not a bad microswitch.

Last edited by ctrlz; 09-06-2024 at 10:00 AM.
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Old 09-06-2024, 10:31 AM   #8
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Quote:
Originally Posted by lynyrd View Post
Hello,
I had battery problems, I put a new one charged at 14.5V,
Everything lights up, but it does not start, it asks me to put myself in mode, "Parking". while it is already there. the "Parking" mode is blocked, the lever does not move.
Is there a fuse or something that would prevent it from starting?
This is a problem with the shift selector position sensor in the transmission, which blocks starting the car unless it is in either neutral or park.

I use a battery disconnect for storage, and sometimes get this glitch upon reconnection. Here is what I do to reset it:

1. Disconnect battery for a couple minutes, then reconnect. You can try skipping this, but if the below fails, start again here.
2. Turn on the car in SERVICE MODE, by holding down the start button for 5 seconds WITHOUT your foot on the brake.
3. Wait 30 seconds for the car and all the modules to wake up.
4. Clear codes with an OBD2 scan tool (this will remove any remaining MIL flags from the TCU & ECU that may be in memory and preventing the shifter from moving or car from starting).
5. Shift the car to park or neutral.
6. Start the car as normal (foot on brake). If the MIL (CEL) lights up again, clear codes again.

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Old 09-06-2024, 10:58 AM   #9
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Quote:
Originally Posted by Gunkk View Post
This is a problem with the shift selector position sensor in the transmission, which blocks starting the car unless it is in either neutral or park.
Hopefully, Gunkk's solution works, because it is easier.
There is an internal position sensor in the transmission as he describes. Data goes out to the TCM and comes in on pins 59-63. The "park" signal is on pins 59 and 60.
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Old 09-06-2024, 11:58 AM   #10
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I managed to unlock the parking lot, but it still won't start.
Here is the diagnostic report.
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File Type: pdf control.pdf (118.9 KB, 124 views)
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Old 09-06-2024, 01:40 PM   #11
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Quote:
Originally Posted by lynyrd View Post
I managed to unlock the parking lot, but it still won't start.
Here is the diagnostic report.
That mess of codes looks like more than just a battery swap.
Try Gunkk's approach to clear up the "glitches."
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Old 09-06-2024, 04:22 PM   #12
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Water in the trunk?
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Old 09-07-2024, 01:44 AM   #13
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Quote:
Originally Posted by SS_Don View Post
Water in the trunk?
No, I already had this some time ago, I had to replace the fuse box and the amplifier, it won't happen to me again, I moved the box and the amp into the fenders.
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Old 09-07-2024, 07:54 AM   #14
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Quote:
Originally Posted by Gunkk View Post
This is a problem with the shift selector position sensor in the transmission, which blocks starting the car unless it is in either neutral or park.

I use a battery disconnect for storage, and sometimes get this glitch upon reconnection. Here is what I do to reset it:

1. Disconnect battery for a couple minutes, then reconnect. You can try skipping this, but if the below fails, start again here.
2. Turn on the car in SERVICE MODE, by holding down the start button for 5 seconds WITHOUT your foot on the brake.
3. Wait 30 seconds for the car and all the modules to wake up.
4. Clear codes with an OBD2 scan tool (this will remove any remaining MIL flags from the TCU & ECU that may be in memory and preventing the shifter from moving or car from starting).
5. Shift the car to park or neutral.
6. Start the car as normal (foot on brake). If the MIL (CEL) lights up again, clear codes again.

Thanks Gunkk, I did exactly what you said and after deleting the errors, there was one left, I deleted it again, it started.
Thanks again.
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