3 Common Reasons Why Your Seat Mii Replacement Key Isn't Working (And What You Can Do To Fix It)

Key Fob Replacement for the Seat Ibiza

This fifth-generation Ibiza is revamped is a contender for the supermini segment. It competes against the Renault Clio, Peugeot 208 and Ford Fiesta.

Utilizing a thumb nail or small screwdriver that has a flat head (A), prise upwards the key fob compartment cover (B). Replace the CR2025 coin battery, making sure it's in the correct direction and polarity.

Dead Coin Battery

A dead battery for a coin is the most typical cause of a key fob that isn't locking or unlocking your car. Before it dies you will notice an increase in range, or no power. It is easy to replace it with a brand new (CR2025) one at your local grocery store. Be aware that defective or unsuitable batteries can damage the key fob. Make sure that the new battery has the same size, specification and voltage as the older one.

If your device was exposed to clean water, such as rain or soapy tap water it is possible that the chip inside has been damaged due to corrosion. You can try cleaning the chip with isopropyl Alcohol or an electronic cleaner to test if it helps, but it is likely that the chip has been damaged and fried.

The most efficient solution is to buy an entirely new key fob. They are available from most major car dealers and can be fitted by a professional mechanic. They can also be purchased on the internet from sites like ebay. The best method is to work on a flat surface with good lighting. This makes it easier to work on the tiny parts inside. This also helps you to avoid putting something back in the wrong place. Always work on the key fob in a secured and safe space.

Water Damage

It's possible to think that your fob is destroyed if drop it in an unintentional pool or accidentally wash it. But there's still hope. When the circuit board in the fob is exposed to water, it becomes a conductor that shorts out the components. It also speeds up the process of rust and corrosion.

This is a simple solution. Find something absorbent to place inside the fob. A tissue or paper towel will work well. Use a cotton swab with isopropyl for cleaning the circuit board as well as any other components. Allow the circuit board to air dry in a warm, dry environment for several weeks.

Replace the battery once the fob is dry by replacing it with a new one that is the same dimensions and polarity ('+' (pointing upwards). The fob can be difficult to open to access the battery, however should you have a flat-head screwdriver it will be simple to insert. After the fob is repaired, it should function as normal. If it isn't working you may need to program it again or replace the module.

Radio Interference

When a keyfob is working properly, it broadcasts an audio frequency that is picked up by a receiver module inside your vehicle. If the signal is distorted in some way your key fob will not perform as it should. This could be caused by things, weather conditions or other transmitters operating on the same frequency close to your car.

This can cause your key fob to not activate the vehicle's features like the ignition switch, or the security system. In this instance it's best to replace the battery on your key fob.

A few LED lights that are aftermarket and uses the same frequency as a remote key fob might interfere with the signal, preventing it from reaching the receiver modules. To avoid interference, the lighting must be turned off, or switched to another frequency.

If the issue persists after replacing the battery, the antenna on your key fob may be damaged or not functioning properly. The antenna is responsible to transmit a signal between the key fob and the receiver module. An OBDII scan will aid in diagnosing the issue by revealing what's wrong with your system. The scanner will ask you for details about your car, including the make, model engine type, VIN number.

Faulty Receiver Module

The key fob features a receiver module that transmits signals to lock and unlock the key fob. The electronic components on the board will cease functioning if this component is affected by a malfunction. If this is the case it is possible to reprogramme the module using an OBDII scanner or replacing the key fob may help.

broken seat car key can be caused by a dead coin cell battery either from water damage or signal interference. You can reset the on-board computer if you disconnect the 12 volt batteries for about 15 minutes. This will remove any remaining electric current that could cause issues. Start by removing the cable from the negative terminal of the battery first, then the positive terminal. After 15 minutes, connect the battery in reverse order beginning with positive first, and negative second.

Dirt or water can cause damage to the internal chip of the key fob. If your key fob stopped functioning after getting wet, clean it with isopropyl or electronics cleaner. Then, you can reinstall the battery. If the key ceases to function after exposure to salted or soapy water, it's likely that the chip has become damaged and requires to be replaced.

A faulty antenna module fuse could also be the reason. It's the fuse that sends an alert to the vehicle to lock or unlock. Depending on the model, the fuse is located in one of the many locations such as the engine bay, to the left of the dashboard, beneath the rear seat, or trunk.