seat key battery replacement for the Seat Ibiza
This fifth-generation Ibiza is redesigned, is a contender for the supermini segment. It competes against the Renault Clio, Peugeot 208 and Ford Fiesta.
Use a small flat-head screwdriver or a thumbnail (A) to 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
The most common reason for a key fob to not be able to lock or unlock your vehicle is a dead coin battery. It usually displays warning signs prior to dying such as a decreasing range or no power at any time. It is simple to replace it with a new one (CR2025) from a local store. Be aware that faulty or unsuitable batteries can damage the key fob. Make sure that the new battery is the same size, specification and voltage as the previous one.
If your device was exposed to clean water like rain or soapy tap water, it is likely that the chip inside has been damaged due to corrosion. You could try cleaning the chip with alcohol or an electronic cleaner to try to see if this helps but it is likely the chip has been damaged and fried.
The most straightforward solution is to buy an entirely new key fob. Major car dealers sell them and they can be installed by an experienced mechanic. They can also be bought on ebay. The best thing to do is to work on a level surface with adequate lighting. It is much easier to work on small parts. This can also help to avoid placing anything back in the wrong location. Always work on your key fob in a place that is secure and safe.
Water Damage
You may think your key fob is damaged if you drop it in the water or accidentally wash it. There's a chance. If the circuit board inside the fob is exposed to water, it becomes conductor that shorts the components. It also accelerates the process of corrosion and rust.
Fortunately, this is not difficult to fix. Find something absorbent, and place it inside the fob. Paper towl or tissue work well. Then apply the cotton swab, dipped in isopropyl alcohol to clean the circuit board and other components to clean out any residues of acid from batteries and contamination. The fob should dry for a few days in a dry, warm environment.
Replace the battery after the fob has dried out with a new one with the same size and polarity ('+' (pointing upwards). The fob might be difficult to open to get to the battery, but If you have a flat-head screwdriver on hand it should be easy to slide in. Once the fob has been repaired, it should function like a normal. If it doesn't, then you'll require reprogramming it or replace the receiver module.
Radio Interference
If a key fob is functioning correctly, it transmits a radio frequency signal that is interpreted by the receiver module inside your car. If the signal is interrupted, your key fob won't function. This could be due things, weather conditions or other transmitters operating within the same frequency band close to your car.
This could cause your key fob to not be able to activate the vehicle's functions, such as the ignition switch or security system. It is recommended to replace your key fob's battery.
Some LED lighting from the aftermarket that uses the same frequency as the remote key fob may interfere with the signal and prevent it from reaching the receiver modules. The LED light must be turned off or switched to a different frequency in order to keep out interference.
If the issue continues to persist after replacing the battery, the antenna of your key fob could be damaged or inoperable. This is crucial because the antenna is responsible for transmitting an indication from the key fob to the receiver module. Utilizing an OBDII scanner will assist in diagnosing the problem by revealing what's wrong with the system. The scanner will ask for details about your vehicle including the model and make along with the engine type 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 then all the on-board electronics will stop working. Reprogramming the key fob by an OBDII scan, or replacing it may help.
This problem could be caused by a dead battery in the coin-cell or a water damage or signal interference. You can reset your on-board computer by disconnecting the 12 Volt batteries for 15 mins. This will draw out any remaining electrical energy that could be causing problems. Begin by removing the cable from the negative terminal of the battery first, followed by the positive terminal. After 15 minutes, connect your battery in reverse order. First, positive and then negative next.
Water or dirt can also damage the internal chip of the key fob. If the key fob you purchased stopped working after being wet, wash it with isopropyl, or an electronics cleaner. Then, reinstall the battery. If the key stopped working after being exposed to salted or soapy water, it's likely that the chip is damaged and needs to be replaced.
Another possibility is a faulty antenna module fuse that transmits the signal to lock or unlock to the vehicle. Based on the model you have the fuse can be located in one of several locations like the engine bay, the side of the dashboard, beneath the rear seat, or trunk.