Key Fob Replacement for the Seat Ibiza
This facelifted fifth-generation Ibiza is a contender in the crowded supermini segment. It competes with the Renault Clio, Peugeot 208 and Ford Fiesta.
With a thumb nail or small flat head screwdriver (A), prise upwards the key fob compartment cover (B). Replace the CR2025 coin battery by ensuring it's in the correct direction and in the right polarity.
Dead Coin Battery
The most frequent reason for a key fob that does not lock or unlock your car is a dead coin battery. Before it dies, you will notice the decrease in range or no power. It is easy to replace it with a new (CR2025) one from your local supermarket. Be aware that defective or defective batteries could damage the key fob. Make sure the battery you replace is the same size and voltage, as well as the same specification.
If your device was exposed to clean water like rain or soapy tap water it is likely that the chip inside has been damaged by corrosion. You can clean the chip with isopropyl or electronic cleaners to see if this helps, but it's likely the chip is fried.
The simplest solution is to purchase an entirely new key fob. Major car dealers sell keys and can be installed by an experienced mechanic. They can also be purchased on the internet from sites like ebay. It is recommended to work on a work surface that has good lighting. It is much easier to work on the smaller parts. This can also help to avoid putting something back in the wrong spot. Always work on your key fob in a location that is safe and secure.
Water Damage
If your fob's key gets submerged after dropping it into the pool or by slipping it in the washing machine you might think it's over, but there's a chance. When the circuit board in the fob is exposed to water, it develops a conductor which shorts the components. It also accelerates the process of rust and corrosion.
Luckily, this is simple to fix. Find something absorbent and place it inside the fob. Paper towl or tissue is ideal. Then, use a cotton swab that has been soaked in isopropyl ethanol to wipe down the circuit board and other components to remove any battery acid residue or contamination. Allow the circuit board to air dry in a dry, warm environment for several weeks.
Replace the battery once the fob is dry with a new one that is the same size and polarity ('+' (pointing upwards). The fob isn't easy opening to access the battery, however if you keep a flat-head screwdriver at hand it should be easy to slide in. After the fob is put back together, it should work in a normal manner. If it isn't working then you might need to program it again or replace the module.
Radio Interference
If a key fob is functioning properly, it sends the radio frequency signal which is picked up by the receiver module in your car. If the signal is not received the key fob won't work. This could be caused by factors like weather conditions, objects, or other transmitters operating on the same frequency band near your vehicle.
This could cause your key fob to not activate the vehicle's functions, such as the ignition switch or the security system. In this situation, it would be 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 can interfere with the signal, preventing it from reaching the receiver modules. The LED's lighting needs to be turned off or switched to a different frequency in order to prevent interference.
If the issue is still present after installing a new battery, the antenna on the key fob might be damaged or not functioning properly. This is important because the antenna is responsible for transmitting a signal from the key fob to the receiver module. Using an OBDII scanner can aid in diagnosing the issue by telling you what is wrong with the system. The scanner will ask you for details about your particular vehicle like the make and model of the vehicle, the type of engine, and VIN number.
Faulty Receiver Module
The key fob comes with a receiver module which transmits signals for locking and unlocking. If this module is damaged, all of the on-board electronics will stop working. If this happens then reprogramming the module using an OBDII scanner or replacing the key fob may aid.
This problem can be caused by a dead battery in the coin-cell either from water damage or signal interference. You can reset the on-board computer if you disconnect the 12 volt batteries for 15 minutes. This will eliminate any remaining electrical energy that could be causing problems. Start by removing the cable from the negative terminal first, followed by the positive terminal. After 15 minutes, reconnect your battery in reverse order. First positive, then negative next.
replacement seat key of dirt or water could affect the internal chip inside the key fob. If your key fob stopped functioning after getting wet, wipe it with isopropyl or electronics cleaner. Then, reinstall the battery. If it stopped working after exposure to salty or soapy water the chip is likely damaged and should be replaced.
Another possibility is a faulty antenna module fuse that is sending the lock / unlock signal to the vehicle. Based on the model you have the fuse can be found in one of the many locations including the engine bay, on the side of the dashboard, under the rear seat, or trunk.