Key Fob Replacement for the Seat Ibiza
This facelifted fifth-generation Ibiza is an interesting contender in the supermini segment. It goes toe-to-toe with the Renault Clio, Peugeot 208 and Ford Fiesta.
Use a small flat-head screwdriver or a thumbnail (A) to open the battery compartment cover on the key fob (B). Replace the CR2025 batteries, making sure it is installed in the proper direction.
Dead Coin Battery
A dead battery on a coin is the most common cause of a key fob that isn't locking or unlocking your car. If it fails you'll notice an increase in range or no power. It is easy to replace it with a brand new (CR2025) one from your local store. Be aware that faulty or unsuitable batteries may damage the key fob. Make sure that the new battery is identical in size, specifications and voltage as the older one.
If your fob was exposed to clean water such as rain or soapy tap water, it is possible that the chip inside has been damaged by corrosion. You can clean the chip with isopropyl or electronic cleaners to determine if that can help, but that the chip is fried.
The simplest solution is to purchase a new key fob. They are readily available from major dealerships and can be fitted by an experienced mechanic. You can also purchase them online, like on eBay. The best option is to work on a flat, level surface with good lighting. It is much easier to work on small parts. You'll also be able to avoid placing things in the wrong spot. Always keep the key fob in a secured and safe location.
Water Damage
If your key fob gets wet from dropping it into the pool or fumbling it in the washing machine, you may think it's a goner but there's still hope. When the circuit board inside the fob is exposed to water, it develops an electrical conductor, which shorts the components. It also speeds up the process of corrosion and rust.
Luckily, this is a simple issue to fix. Find something absorbent to put inside the fob. A tissue or a paper towel will work well. Use a cotton swab soaked in isopropyl to wash the circuit board as well as any other components. Allow the board to dry for several days in a dry, warm environment.
Replace the battery once the fob has dried out with a fresh one with the same dimensions and polarity ('+' (pointing upwards). seat leon car key battery can be tricky to open up the fob in order to access the battery but if you have a small screwdriver that is flat handy it should slide in easily. After the fob is repaired, it should function in a normal manner. If it doesn't, you might require reprogramming it or replace the receiver module.
Radio Interference
If a key fob is working correctly, it sends a radio frequency signal that is interpreted by the receiver module inside your car. If the signal is not received, your key fob won't work. This could be due to objects like weather conditions or other transmitters operating on the same frequency near your car.
In this case, it is best to replace the battery in your key fob. In this instance it is best to replace the battery in your key fob.
A few LED lights that are aftermarket and utilizes the same frequency as a remote key fob might interfere with the signal and prevent it from reaching the receiver modules. The LED's lighting needs to be turned off or switched to a different frequency in order to be able to avoid interference.
If you've just replaced the battery in your key fob, and the problem persists, it's likely that the antenna on your key fob is damaged or malfunctioning. This is important because the antenna is responsible for sending signals from the key fob to the receiver module. Using an OBDII scanner can assist in diagnosing the problem by revealing what's wrong with the system. The scanner will ask you for details about your vehicle including the make, model and engine type as well as the VIN number.
Faulty Receiver Module
The key fob has the receiver module which transmits the signals to lock and unlock. All on-board electronic components will cease to function if this module becomes inoperable. If this is the case Reprogramming using an OBDII scanner or replacing the key fob itself may aid.
This problem can be caused by a dead battery in the coin-cell or water damage, or signal interference. You can try resetting the on-board computer by disconnecting the 12 volt battery for 15 minutes. This will drain any remaining electrical energy that could cause issues. Start by removing the cable from the negative terminal first, followed by the positive terminal. After 15 minutes, you can reconnect your battery in reverse order. First positive, then negative second.
The internal chip in the key fob could be damaged by dirt or water. If your key quit working after getting wet, wipe the electronic component with isopropyl alcohol or an electronic cleaner prior to reinstalling the battery. If it has stopped working after exposure to salty or soapy water, the chip is probably damaged and must be replaced.
Another possibility is an inoperable antenna module fuse, which transmits the signal to lock or unlock to the vehicle. The fuse could be found in a variety of locations, based on the model. For example it could be under the rear seat or trunk, or on the side of the dashboard.