Power door locks could quite possibly be the greatest convenience feature of the last 50 years. They are also one of the most incredibly annoying features when they don’t work. Quit struggling with how to fix your Chrysler 300 power door locks. Here is how to fix them. Before you begin to work on your power door locks, it is important to first spend time correctly diagnosing the problem. You will want to check all the doors and the key fob. Once you have correctly determined exactly what is going on, find the section below corresponding to your problem. If all the doors are failing to lock/unlock, you most likely have a bad lock relay. This relay sits on an electric board under the dash. In order to fix this problem, you will either need to replace the relay or purchase a new board. Replacing the relay is the cheap way to go ($10-20), yet you will need to know how to solder a new one in place. If you don’t have an electronics background or haven’t done this before, it can be difficult.
The more expensive route is to replace the entire electric board ($250-350). If you have a single door which doesn’t lock/unlock, you most likely have a problem with the actuator motor. This motor powers the locking mechanism. When this is the problem, you will need to remove the door panel and have a look. In order to remove the door panel: Now that the door panel is removed, inspect the locking system. Check the electrical connections to make sure they are tight and look over the actuator motor. Find the opening for the motor and spray in WD-40 to see if the actuator is simply locked up. Test it by reconnecting the power supply. If it doesn’t work and/or you hear a buzzing noise, the actuator motor has/is gone out. Order a new replacement part and swap it out. If your key fob fails to lock/unlock, it is most likely a dead battery within the fob itself. In order to fix this problem, you will need to replace the battery. Here is how to do it: If changing the battery doesn’t work, you may have a larger issue with the remote key relay and/or a larger electrical issue.
In this case, bring it to your local dealer for repair. Hopefully, one of these sections addressed your problem and your power door locks are working like they should. If not, it is time to visit your dealer. In any case, getting the power door locks fixed is a must. The 1A Auto Video Library Watch Videos For My Vehicles Search Videos for a: VISIT OUR OFFICIAL YOUTUBE PAGE: Since May 21, 2007, 1A Auto has uploaded over 4,000 how to install auto parts videos to YouTube. Subscribe to the 1A Auto How To Auto Repair Videos channel on YouTube! MOST POPULAR 1A AUTO VIDEOS How to Install Power Steering Cap Replacement GMC Sierra K1500 How to Replace Install Steering Column Covers 95-99 GMC Sierra K1500 How to Replace Install Ignition Lock Cylinder 95-97 GMC Sierra K1500 Choose the Make of Your VehicleWe hack our bodies with artifacts from the future-present. I used an rfid unlock scanner similar to the one that DT sells.
Just wired it up to my door locks. A little complicated, but it worked. Sucked that I had a VW beetle. They have the most terribly complex door locks. Like Trybalwolf I used a low frequency reader similar to DT’s xEM Access Controller and wired to a spare key fob with an interposing relay. Like Benbeezy my controller presses a button. My car had some security feature where the unlock button couldn’t be pressed from inside a locked car or I would have wired it there instead of using battery operated fob. @meanderingpaul yeah he probably wired into the key fob because it's easier than wiring in to the ignition. that's what i'm not sure about how to do. @McSTUFF my car's the same, so I have my reader wired to the circuit for the key hole on the door. @CitrusBolt, I never looked there. @McSTUFFYea I am kinda paranoid about a bike I have been saving up for getting stolen.... @ightden I would give you some pointers but every car is different. I haven't even looked in my door panel or under my dash for this truck yet.
I believe I should be able to just trace the lock back to the computer and get in that way but I won't know till I open some things up. I may also need to be creative if that proves to complex. Good thing is I only have two doors to unlock ;) well here's my schematics for anyone else who wants to drive some relays with an arduino to start their car. /a/hAXBB you'll need to add a voltage regulating circuit as well, though, as i don't have that shown in these schematics. I wanted to set up my car to unlock with my xNT implant, but I ran into some problems. First, my car has manual windows so I'd need to convert them. Usually not a problem since a conversion kit is twenty bucks, but mine has cable locks instead of rod locks, so the conversion kit is about ten times the cost for my model. @katzevonstich to me it sounds like maybe your tag is to deep in there. and yeah that does suck that you have a car that is not fit to just hack it in. Well that would save me a bunch of time!
It's a 2012 gmc sierra 1500. This was the first time I had to actually do anything to this truck. Your saving me time on the looking through the Google for wiring diagrams thank you much @posthumanist. @Meanderpaul I've printed the schematics for your vehicle. There are two options based on the RPO codes. If you would kindly take a look inside your glovebox lid there is a white rectangular sticker with a list of 3 character alpha-numeric codes on it. Could you please tell me if your vehicle RPO list contains AN3, DL3, or AU3?I'll consult with my electrical diagnostician once I know which diagram is correct for your vehicle. I stumbled on this RFID reader/switch combo. .au/TCC-105.html$99 Australian dollars, so around $71 USD. @posthuman i checked out their website and sparkfun carries them.I'll need to get to instruction sheet for one and maybe order it this week. Do you have the link? I only briefly skimmed the thread, but I was thinking that maybe coming at this from a software side instead of a hardware side might be better.
I know that there have been some efforts to make some open source hardware and software for you to interface with your car's OBD. I wouldn't doubt that you can unlock your doors through that interface.//s/ref=nb_sb_noss?url=search-alias%3Dcar-electronics&field-keywords=obdIIEDIT: It seems as though OBD might only be used for diagnostics, can anybody clarify? @katzevonstich i think you are correct. @posthumanist I went on to try and locate that specific device on the website and couldn't find it. I think they just sell a diagnostic component like Kat said. @PostHumanist, don't worry they make arduino stuff pretty simple. It is just a step or two above blinking an led, and the code should be okay too. Let me know what you end up using as a reader @Scruffy?Between our concerted efforts we may yet standardize the installation process for RFID entry systems It's probably a good thing adding to a vehicle's program isn't so easy. Bricked phones are annoying enough. I have that issue too @chrisbot, I found a sketch that looks promising but all the instructions are in chinese