Key Fob Replacement for the Seat Ibiza
This fifth-generation Ibiza that has been redesignated is a serious contender for the supermini segment. It competes with Renault Clio and Peugeot 208 as well as the Ford Fiesta.
Use a small screwdriver or a thumbnail (A) to break open the battery compartment cover of the key fob (B). Replace the CR2025 batteries, making sure it is installed in the correct direction.
Dead Coin Battery
A dead coin battery is the most common cause of a key fob that isn't locking or unlocking your vehicle. If it fails you'll see the decrease in range or no power. It is easy to replace it with a new one (CR2025) from a local store. You should be aware that using the wrong or unsuitable batteries can damage your key fob. Be sure that the battery you replace is the same size and voltage and has the same specifications.
If your device was exposed to clean water such as rain or soapy tap water it is possible that the electronic chip inside has been damaged due to corrosion. You can try cleaning the chip with isopropyl alcohol or an electronic cleaner to check if it works but it is likely the chip is damaged.
A new key fob is the simplest solution. They are readily available from major car dealers and can be fitted by a skilled mechanic. You can also purchase them online, for example on eBay. It is best to work on a work surface that has good lighting. This will make it easier to work on the smaller parts inside. This also helps you to avoid putting something back in the wrong location. Always work on the key fob in a secured and safe area.
Water Damage
If your key fob is submerged after dropping it into the pool or fumbling it in the wash you might think it's over, but there's still hope. The problem begins when the circuit board in the fob comes in contact with water. It makes an excellent conductor and shorts out components. It also speeds up corrosion and rust.
This is an easy fix. Find something absorbent, and put it inside the fob. Paper towl or tissue is ideal. Use a cotton swab that contains isopropyl to clean the circuit board as well as any other components. Let the fob air dry in a dry, warm environment for several weeks.
When the fob has dried out, replace the battery with another one of the same size and the same polarity ('+' with the upwards direction). The fob can be difficult opening to access the battery, however when you have a flat head screwdriver, it should be easy to insert. After the fob has been reassembled and working, it should operate like normal. If it does not work you may need to program it again or replace the module.
Radio Interference
When a keyfob operates properly, it transmits a radio frequency that is received by a module in your vehicle. However, if the signal is distorted in any way the key fob will not function properly. This could be caused by weather conditions, objects or other transmitters operating within the same frequency band near your car.
In this scenario it is recommended to replace the battery on your key fob. In this instance it is best to replace the battery on 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 and stop it from reaching the receiver modules. To avoid interference, the LED light must be turned off, or to a different frequency.
If you have a new battery in your key fob, and the problem persists, it's likely that the antenna on your key fob is damaged or not functioning properly. This is significant because the antenna is responsible for transmitting an indication from the key fob to the receiver module. An OBDII scan will assist in diagnosing the issue by revealing exactly what's wrong with the system. The scanner will ask you for details about your vehicle including the make, model, engine type and VIN number.
Faulty Receiver Module
The key fob features a receiver module that sends signals for locking and unlocking. All on-board electronic components will stop working if the receiver module develops a problem. If this happens, reprogramming with an OBDII scanner or replacing the key fob itself could assist.
There are a number of possible causes which could be due to a dead coin battery, water damage or signal interference. You can try resetting the on-board computer by disconnecting the battery 12 volts for 15 minutes. This will remove any remaining electricity that could be causing issues. Remove the cable first from the negative terminal, then the positive terminal. After 15 minutes, reconnect your battery in reverse order. First, positive, then negative second.
The internal chip of the key fob may be damaged by water or dirt. If your key has stopped working when it was wet, you need to clean the electronic component using isopropyl alcohol or an electronics cleaner before reinstalling the battery. If it stopped working after exposure to soapy or salty water, the chip is probably fried and will need to be replaced.
A damaged antenna module fuse could be a cause. It is the fuse that sends an alert to the vehicle to lock or unlock. The fuse can be located in a variety of places, based on the model. For The Keylab could be beneath the rear seat or trunk, or the side of the dashboard.