Again, if you don’t see this light, your key fob is defective. Some covers slide up to remove, or to the right to remove. This is often accomplished by turning the key in the ignition several times with the doors shut. Hopefully, reading this article has left you better prepared to deal with this situation. There are a few ways to determine the type of battery you need. 4. Specifically, this article addresses issues with unlocking the Mercedes Benz CLK, E C CLS, A160, C-Class C220, C230, C300, CLS, and ML models. But some vehicles may not have a visible keyhole. In that case, you may have to reprogram the remote so that it pairs up with the car’s receiver unit. Home, Auto Repair Library, Auto Parts, Accessories, Tools, Manuals & Books, Car BLOG, Links, Index Key Fob Remote Won't Unlock Door by Larry Carley copyright 2019 I heard a sound click for unlock and directly return, open all the doors. However, there could also be a mechanical or electrical problem with the door locks. Different vehicles use different procedures. In that case, you will want to look for a trim piece with a small slot in it, which you will have to pry away to access the keyhole. Since they unlock, it shows the system itself is working (car is acknowledging the fob request). Jeremy Laukkonen is tech writer and the creator of a popular blog and video game startup. Read on for potential problem areas. A dead key fob means you’re locked out of the car, which is the last thing anyone would want when in a hurry. The latch or lock actuator has likely bound up, and will need to be accessed get the door open. Keeping your car doors locked is one important safeguard against auto theft and vandalism, but it can also backfire. "To come back to can be five times the force of gravity" - video editor's mistake? Insert your key into the ignition, and turn it to the accessory position. Key fobs are exposed to more physical abuse than most electronics, and they aren’t indestructible. i used the metalic key to open door, when i put the fob key into ignition , it didn't work . If none of the other buttons work, and you have tried a new battery in the fob, the fob may be bad, or the fault may be in the keyless entry antenna or wiring. If the procedure was successful, your key fob remote will work again. When you press the button on your key, look at it carefully to see what happens. For example, the American-based car brands including Fiat, Chrysler, Jeep, and others use the Unconnect Access service for their vehicles. Most car brands offer a remote door unlock service for emergencies such as a broken smart fob and locking the keys inside the car. Locked out of your car in Naples FL and need help contact us at (239) 849-4979, My key wouldn’t engage with ignition – couldn’t start. The best way to "foil" would-be car thieves using this trick is to wrap your key fob in aluminum foil when your vehicle is parked. Here are some common reasons for this issue: 2. Has anybody had a problem similar to this? He also ghostwrites articles for numerous major trade publications. Some cars have push-button ignitions that only operate when the key fob is close by. Your local dealership may also have a universal remote they can use to check if your remote lock mechanism works. It is very likely that your car key is not working because the lock is faulty, or worn down. Things To Avoid While Driving An Automatic, Best Tire Pressure Monitoring System Reviews, The Best TOAD Vehicles for Frequent Campers. Your email address will not be published. If you buy a used one, you will have to reprogram your vehicle to recognize it before it will actually lock and unlock your doors. When the physical key can lock or unlock the door, be sure that the mechanism of the locks is fine. The key fob will unlock, but not lock the car doors, MAINTENANCE WARNING: Possible downtime early morning Dec 2/4/9 UTC (8:30PM…, “Question closed” notifications experiment results and graduation. (Usually, this synchronization happens as soon as the key goes into the ignition, but in some cases, you will need to program the fob to synchronize to your car.) There are other methods, and some require special equipment. So here are some reasons why your remote key fob or smart fob isn't unlocking the door, and what you can do to resolve the problem. Start the car and you should see some codes display on the scanner. Soldering them back to their position is likely to solve the problem. Many vehicles use a rolling code that changes each time you use the fob to unlock or start your vehicle. If the other buttons work, the problem is a bad unlock button. Next, try taking the emergency metal key out of the fob and using it to manually unlock the car’s doors. My 3 button remote will not unlock the doors and trunk on some days. There are a few reasons this can happen, but they are all solvable problems. If the smart fob does not have any physical damage, the easiest solution to fix this issue is to change the battery. Car door locks work in conjunction with keys, which means that if you are constantly using your car key to physically unlock your car door, the internal mechanism of the lock will wear down over time. In that case, try removing the buttons, cleaning them, flexing them in and out, and then reassembling the remote. Sometimes, the remote still does not work after checking for all possible reasons. Key won't unlock car anymore The latch inside the door is locked and unlocked by a lock actuator. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. (If you’ve already done this, keep reading.). How can I make an Android app "forget" that it installed on my phone before? Take notes of the numbers on the battery and replace it with a similar one. In that case, you may have to contact your local dealer or an independent shop that has experience with your particular make and model of vehicle. If the remote key won’t unlock car door even after battery swapping or fixing the battery contacts, try a distant unlocking service. Your Mercedes key fob doesn’t work after changing the battery. I have a Peugeot 206 manual model 2004. Naples, FL. Will a valet key work to start the car? If you notice that one or more of the buttons look like they aren’t popping back out correctly, or they seem to have come apart inside, that can prevent a car key remote from working properly. If the battery is more than five years old, consider just replacing it. The other option is to just buy a replacement remote, which you can obtain either new from your local dealer or used. Car key remote fobs are a nice convenience to have, but they all stop working eventually. Is there a name for applying estimation at a lower level of aggregation, and is it necessarily problematic? They just spin (clockwise) but do click so it's not spinning freely as if the entire door lock is screwed. Your problem is likely that the fob can start the car but will not allow you to unlock the vehicle’s doors or trunk. As far as I know it’s not the Keyless locking Module (it does have a fuse). even though the batteries where fairly new, i changed them to brand new batteries , and again fob key didn't work and red light never turned on.