Key Fob Replacement for the Seat Ibiza
This facelifted fifth-generation Ibiza is an attractive contender in the supermini segment. It competes against the Renault Clio, Peugeot 208 and Ford Fiesta.
With a thumb nail or small screwdriver that has a flat head (A) to lift up the key fob battery compartment cover (B). Replace the CR2025 battery, ensuring it is placed in the proper direction.
Dead Coin Battery
The most frequent reason for a key fob that does not allow you to lock or unlock your car is a dead battery. Before it dies you will see the decrease in range or no power. It is simple to replace with a new one (CR2025) from a local supermarket. Be aware that incorrect or defective batteries could cause damage to the key fob. Make sure the battery you replace is the same size and voltage, and has the same specification.
If your fob was exposed to clean water, like rainwater or soapy water from the tap it is possible that corrosion has caused damage to the chip's electronic circuit. You can clean the chip using isopropyl or electronic cleaners to see if that helps, but that the chip is fried.
The most simple solution is to get an entirely new key fob. They are readily available from major dealerships and can be fitted by a professional mechanic. They can also be purchased on the internet from sites like ebay. It is recommended to work on a surface that has good lighting. It is much easier to work on the smaller parts. It also allows you to avoid placing something in the wrong location. Always work on replacement seat key in an area that is secure and safe.
Water Damage
It's possible to think that your fob is destroyed if drop it into a pool or accidentally wash it. There's a chance. The problem is when the circuit board inside the fob comes in contact with water. It creates a fantastic conductor and shorts out components. It also speeds up corrosion and rust.
Luckily, this is simple to fix. Find something absorbent to put inside the fob. A tissue or a paper towel will be ideal. Use a cotton swab soaked in isopropyl for cleaning the circuit board as well as any other components. The fob should dry for several days in a warm and dry environment.
Replace the battery once the fob has dried out by a new one with the same size and the same polarity ('+' (pointing upwards). It can be difficult to open the fob to access the battery, but if have a small screwdriver that is flat handy it should slide in easily. Once the fob has been rebuilt, it should operate in a normal manner. If it doesn't, you might have to reprogramme it or replace the receiver module.
Radio Interference
When a keyfob operates correctly, it emits the radio frequency which is absorbed by a receiver module in your vehicle. If the signal is interrupted in any way the key fob won't perform as it should. This can be caused by objects, weather conditions, or other transmitters that operate at the same frequency as your vehicle.
In this instance it is recommended to replace the battery on your key fob. In this situation it is recommended to replace the battery inside your key fob.
A few LED lighting products that uses the same frequencies as key fobs for remote control could interfere with the signal, stopping it from reaching receiver modules. The LED lighting must be turned off or switched to a different frequency in order to avoid interference.
If you've just replaced the battery on your key fob but the issue persists, it is likely that the antenna on the key fob is damaged or not functioning properly. This is significant because the antenna is responsible for transmitting signals from the key fob to the receiver module. An OBDII scan can assist in diagnosing the issue 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 an electronic receiver that transmits signals to lock and unlock the key fob. If the receiver module develops a fault, all of the on-board electronics will cease to function. If this is the case then reprogramming the module using an OBDII scanner or replacing the key fob could aid.
There are several possible reasons for this problem, including a dead coin battery water damage, or signal interference. You can reset the onboard computer by disconnecting the 12 Volt batteries for 15 mins. This will eliminate any remaining power that may be causing problems. The cable should be removed first from the negative terminal, then from the positive terminal. After 15 minutes, you can reconnect your battery in reverse order. First, positive, then negative second.
Dirt or water can affect the internal chip inside the key fob. If your key quit working after getting wet, wash the electronic component with isopropyl Alcohol or an electronic cleaner prior to reinstalling the battery. If it stops working after exposure to soapy or salty water the chip could be damaged and needs to be replaced.
A damaged antenna module fuse may also be the cause. This is the fuse that sends an electronic signal to the vehicle to lock or unlock. The fuse may be located in several places, depending on the type of vehicle. For example it could be under the rear seat, or in the trunk, or the side of the dashboard.