Weird key fob issue with bonus other weird issue - Dodge Challenger Forum: Challenger & SRT8 Forums
 
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post #1 of 10 (permalink) Old 06-12-2019, 05:16 PM Thread Starter
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Weird key fob issue with bonus other weird issue

2013 R/T push to start. I noticed today that my key fob lock/unock/trunk/panic does not work, but my keyless go DOES work. I can put my hand under the handle, it unlocks, and I get in, hit the PTS button and it strarts right up like normal. But yeah no buttons on the fob work. I changed the battery, same thing. Unhooked the battery in the trunk for about 30 seconds and hooked it back up, same thing.

Now the bonus other weird issue. I noticed that my radio was shutting off right when I shut the car off, its never done that before. I go into the EVIC and look at the setting and the setting (in the 12v industry we call it RAP aka Retained Accessory Power) is turned off and I can't turn it on. I can turn on/off other settings but it won't let me adjust that one. I NEVER go into that setting so there's no way I turned it off. I haven't even been into the "personal" settings in months, or even years.

2013 Challenger R/T 6speed
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post #2 of 10 (permalink) Old 06-13-2019, 03:19 AM
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Probably a bad drivers door latch. Common.
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post #3 of 10 (permalink) Old 06-13-2019, 10:57 AM Thread Starter
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The car doesn't say door open and the setting is turned to "off" and can't be changed. I gave my remote to an engineer at work and he confirmed it was outputting on 433mhz so its something in the car, not the remote itself.
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post #4 of 10 (permalink) Old 06-13-2019, 11:56 AM
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Could be a WIN or CAN bus issue, which means you will need the assistance of a dealership to diagnose.


Diagnosis & Testing - Power Locks & Remote Keyless Entry System
DIAGNOSIS AND TESTING - POWER LOCKS AND REMOTE KEYLESS ENTRY SYSTEM
POWER LOCK SYSTEM

Following are tests that may help to diagnose the hard wired components and circuits of the power lock system. However, these tests may not prove conclusive in the diagnosis of this system. In order to obtain conclusive testing of the power lock system, the Controller Area Network (CAN) data bus and all of the electronic modules that provide inputs to, or receive outputs from the power lock system components must also be tested.

The most reliable, efficient, and accurate means to diagnose the power lock system requires the use of a diagnostic scan tool and the appropriate diagnostic information. The diagnostic scan tool can provide confirmation that the CAN data bus is functional, that all of the proper electronic modules are sending and receiving the proper electronic messages over the CAN data bus, and that the power lock motors are receiving the proper hard wired outputs from the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) for them to perform their power lock system functions.

Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

PRELIMINARY DIAGNOSIS

As a preliminary diagnosis for the power lock system, note the system operation while you actuate both the Lock and Unlock functions with the power lock switches and with the Remote Keyless Entry (RKE) transmitter (also known as the FOB with Integrated Key/FOBIK). Then, proceed as follows:

If the entire power lock system fails to function with either the power lock switches or the FOBIK, check the fused B(+) fuse for the power lock system in the TIPM.

If the power lock system functions with both power lock switches, but not with the FOBIK, proceed to diagnosis of the RKE system.

If the power lock system functions with the FOBIK, but not with one or both power lock switches, proceed to diagnosis of the door lock switches.

If only one power lock motor fails to operate with both power lock switches and the RKE transmitter, proceed to diagnosis of the power lock motor.

REMOTE KEYLESS ENTRY SYSTEM

Following are tests that may help to diagnose the Remote Keyless Entry (RKE) system. However, these tests may not prove conclusive in the diagnosis of this system. In order to obtain conclusive testing of the RKE system, the Controller Area Network (CAN) data bus network and all of the electronic modules that provide inputs to, or receive outputs from the RKE system components must also be tested.

The most reliable, efficient, and accurate means to diagnose the RKE system requires the use of a diagnostic scan tool and the appropriate diagnostic information. The diagnostic scan tool can provide confirmation that the CAN data bus is functional, that all of the proper electronic modules are sending and receiving the proper electronic messages over the CAN data bus, and that the Wireless Ignition Node (WIN) (also known as the Wireless Control Module/WCM) is being sent the proper Radio Frequency (RF) signals by the RKE transmitters (also known as FOB with Integrated Key/FOBIK) to perform its RKE system functions.

Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

PRELIMINARY DIAGNOSIS

As a preliminary diagnosis for the RKE system, first confirm that the power lock system operates satisfactorily. If the power lock system fails to operate correctly, repair that problem before attempting to diagnose the RKE system. If the problem being diagnosed involves only one or more Customer Programmable features, check using the Electronic Vehicle Information Center (EVIC) or with a diagnostic scan tool to be certain that these programmable features are enabled. If the features are enabled and still fail to operate, the WIN and the CAN data bus must be tested. Next, note the RKE system operation while you perform both the Lock and Unlock functions with the FOBIK. Then, proceed as follows:

If the power lock system functions with both power lock switches, but not with the FOBIK, proceed to diagnosis of the FOBIK.

If the FOBIK checks okay, proceed to diagnosis of the WIN or the CAN data bus. The use of a diagnostic scan tool and the appropriate diagnostic information are required.


PASSIVE ENTRY SYSTEM

As a preliminary diagnosis for the Passive Entry (PE) system, first check using the Electronic Vehicle Information Center (EVIC) or with a diagnostic scan tool to be certain that this Customer Programmable feature is enabled. Next, confirm that the power lock system and the RKE system operate satisfactorily. If the power lock system or the RKE system fails to operate correctly, repair that problem before attempting to diagnose the PE system.

The most reliable, efficient, and accurate means to diagnose the PE system requires the use of a diagnostic scan tool and the appropriate diagnostic information. The diagnostic scan tool can provide confirmation that the CAN data bus is functional, that all of the proper electronic modules are sending and receiving the proper electronic messages over the CAN data bus, and that the Passive Entry Module (PEM) (also known as the Passive Entry Keyless Go/PEKG module) is sending the proper Radio Frequency (RF) signals to and receiving the proper RF signals from the RKE transmitters (also known as FOB with Integrated Key/FOBIK) to perform its PE system functions.

Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.


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2015 Challenger RT+ M6 (non-STP)
8lb Magnuson w/ Innovate PSB-1 wideband/boost/shift light gauge
Corsa extreme (2.5")
4" Aluminum one-piece driveshaft
Hellcat bottom airbox
Stainless Works LT headers (2" primaries)
Barton shifter assembly w/ Lou's short shaft and Speed Dawg knob
Comp Cam 7929 & 7748 push rods (gives slightly more lifter preload)
A2speed aluminum coil and valve covers (built in catchcan)
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post #5 of 10 (permalink) Old 06-14-2019, 08:56 AM
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Quote:
Originally Posted by Neltech View Post
2013 R/T push to start. I noticed today that my key fob lock/unock/trunk/panic does not work, but my keyless go DOES work. I can put my hand under the handle, it unlocks, and I get in, hit the PTS button and it strarts right up like normal. But yeah no buttons on the fob work. I changed the battery, same thing. Unhooked the battery in the trunk for about 30 seconds and hooked it back up, same thing.

Now the bonus other weird issue. I noticed that my radio was shutting off right when I shut the car off, its never done that before. I go into the EVIC and look at the setting and the setting (in the 12v industry we call it RAP aka Retained Accessory Power) is turned off and I can't turn it on. I can turn on/off other settings but it won't let me adjust that one. I NEVER go into that setting so there's no way I turned it off. I haven't even been into the "personal" settings in months, or even years.
Quote:
Originally Posted by Neltech View Post
The car doesn't say door open and the setting is turned to "off" and can't be changed. I gave my remote to an engineer at work and he confirmed it was outputting on 433mhz so its something in the car, not the remote itself.
Hi Neltech,
We understand why this may be concerning. We suggest having your dealer inspect this concern if you have not done so already. We are also available via private message if you would like any additional assistance during that process.
Lydia
Dodge Social Care Specialist
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post #6 of 10 (permalink) Old 06-18-2019, 11:58 AM Thread Starter
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***UPDATE***

I noticed after installing some new subwoofers last weekend that my trunk light was no longer working. Looked up the interior lighting system in ProDemand and saw it was fuse 38 to the light, and then from the light to the trunk switch. simple circuit, no way it should affect my problem. so just now I said screw it and swapped the fuse, which was blown. BAM everything starts working. even the setting in the dash went to the default 45 seconds for the delayed accy. So I did some more digging into the power distribution circuit and sure as hell fuse 38 feeds a whole slew of other things.
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post #7 of 10 (permalink) Old 06-18-2019, 12:05 PM
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Don’t you just love a happy ending? Glad you worked it out. Isn’t it amazing the odd quirks that can surface in modern vehicle electronics?

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post #8 of 10 (permalink) Old 06-18-2019, 01:46 PM
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Quote:
Originally Posted by Neltech View Post
***UPDATE***

I noticed after installing some new subwoofers last weekend that my trunk light was no longer working. Looked up the interior lighting system in ProDemand and saw it was fuse 38 to the light, and then from the light to the trunk switch. simple circuit, no way it should affect my problem. so just now I said screw it and swapped the fuse, which was blown. BAM everything starts working. even the setting in the dash went to the default 45 seconds for the delayed accy. So I did some more digging into the power distribution circuit and sure as hell fuse 38 feeds a whole slew of other things.
Thank you for posting a follow-up. You ain't kidding about fuse 38 feeding a whole bunch of electronics...it feeds one of the fused B+ (circuit A117) of the TIPM circuit board.

Circuit A117 feeds the EOM - electronic overhead module, HFM - hands free module and as you found the trunk light.
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post #9 of 10 (permalink) Old 06-18-2019, 02:03 PM Thread Starter
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I really hate when I find a problem online when someone has the exact same problem as me but never comes back with the solution.
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post #10 of 10 (permalink) Old 06-18-2019, 02:27 PM
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That is the best and most important function of this forum, In my opinion anyway. It is a good thing to post the conclusion of a problem so those paying attention can benefit from it.
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