The service life of a battery installed from the factory in a chip or switch key is about 4-5 years, after which it requires replacement. The Ford Focus 2 Restayl and Pre-Restayl had 2 types of keys - one flip-flop, the other simple. In our instructions below, you will find information on how to replace the batteries on both keys.
What kind of battery is in the Ford Focus 2 keys?
To replace we need a CR2032 . It is quite common, so you won’t have any problems purchasing it. This type of battery is used in many car keys, as well as watches and other gadgets.
Battery characteristics:
- Size CR2032
- Battery type Li
- Voltage 3V
Today, manufacturers offer a large selection of batteries of this type:
- GP CR2032
- Duracell cr2032
- SONY CR-2032
- Energizer CR2032
- Panasonic CR2032
When purchasing, we advise you to pay attention not only to the manufacturer, but also to the price. You should not buy batteries that are too cheap, as you may end up with a fake.
Which battery is suitable?
The Ford Focus 2 key fob will require a battery number CR2032. Such “tablets” are used in car keys of other brands and in watches. Features of the element: power – 3 V, diameter – 20 mm, height – 3.1 mm, type – Li-ion.
Read also about CR2016 batteries →
When purchasing, the company that produced the current source and the price are important. You should not buy cheap analogues.
How to replace the battery in a Ford Focus 2 switch key
Using a flat-head screwdriver, carefully separate the key into 2 parts as shown in the photo.
The part of the key that will need to be disassembled with the logo contains the battery.
Use a flathead screwdriver to separate the housing into two parts.
One of the parts will contain a microcircuit, and the other will contain a battery. Carefully remove the battery and replace it with a new one
Reassemble in reverse order
Step-by-step replacement instructions
Now let's start replacing the battery in the key. As stated above, these devices come in two types: flip key fob and smart key. Let's consider both options.
Switchblade key
We throw away the mechanical key. At the side end of the key fob body, under its seat (key), we find a hole.
Lock hole
We insert a small screwdriver into it and turn it counterclockwise until a wide gap forms between the two halves of the key fob. This is about three turns of a screwdriver.
Open the lock holding the halves of the device together
After this, the keychain is easily divided into 2 parts.
Dividing the keychain into two halves
We also disassemble the piece with buttons and logo into 2 halves, like a walnut, using a suitable plastic object or, in extreme cases, the same screwdriver or knife.
Opening the electronic part
On the key fob cover we see a compartment with a CR2032 battery installed. Please note that the element is inserted without a top.
The battery is located in the key fob cover
Use the tip of a knife to pry up the battery and remove it. We install a new one in its place, observing the polarity, and press until it clicks. We close, snap the cover of the electronic part and put in place the block with a folding mechanical key.
Important! During the battery replacement process, we take care not to damage or lose the spring contact tabs that connect the positive batteries to the electronic board.
If we bend or break these contacts, the key fob will not work
Problems after replacing the battery
Sometimes after replacing the battery in the key, the car “does not see” the key. This means that the program has gone wrong and the key needs to be reprogrammed. It's not difficult to do this.
We turn the ignition switch to position - 2 short stops four times. Next, set it to position - 0 and wait for the sound signal.
The signal will sound for about 10 seconds, after which you can program the key. To do this, you need to press any button on the key.
How to determine if a replacement is needed
First of all, let's find out how to understand that the power supply needs to be replaced. Here are the main signs that the battery in the key fob is very discharged and it’s time to install a new one:
- The range of the key fob was reduced to several meters.
- The car does not immediately respond to control signals from the key fob. For example, the alarm turns on only after several attempts.
- The car does not respond to commands at all. The problem may not be with the battery, but the first thing to do is replace the battery with a known good one.
- The battery lasted more than 4 years, regardless of the frequency of use of the key.
How the keychain works and how it works
The commands that are issued through this element are calculated and actuated by the on-board electrical control system. The key fob includes the following components:
- Body organ made of plastic;
- Seat for ignition key;
- Battery in the remote control for power supply;
- Control chip;
- Element for sending a signal to automotive electronics;
- Fixation of the body.
When the car is parked or short-term stops are made, the owner uses the key fob to turn on the anti-theft system and lock the vehicle doors. If unauthorized access attempts occur after this, the vehicle will activate a noise and light alarm.
When the driver presses the lock control key, this will give the ECU a special radio signal, which will be received and translated into the appropriate commands - a specific device that decrypts and recognizes the signals is responsible for this.
The key fob has its own program and a unique signal, that is, if you take two Ford Focus key fobs and press the button, the protection is deactivated only on a specific car, whose electronic unit is programmatically combined with the remote control.
Smart Ford
Ford Focus 3 in this regard can easily be called a “smart” car. The car's electronics perform many functions, control the operation of the engine, diagnose the operation of various systems and components of the car, and control many small details, which it periodically reminds the driver of.
These seemingly small things, at first glance, include monitoring the battery charge in the Ford Focus 3 ignition key. This little thing is actually of great importance. Many drivers whose cars are equipped with electronic keys or alarms sooner or later face a situation when the battery that powers the key or key fob is discharged. In such cases, you have to either urgently look for a battery or a spare key fob. Otherwise, it is not possible to open and start the car. In this context, a timely reminder of the need to replace the battery does not seem like a trifle.
Ford Focus 3, when it detects a weakening of the battery charge that powers the key, very persistently reminds you that it needs to be replaced. Otherwise, the car simply does not move.
Power steering fluid for Ford Focus 2: how to replace, which one to use, how much to pour
Opening FF2 without keys
In general, this situation has three types: 1) When the bar was pulled, it simply jumped off the round joint on the cylinder side or on the lock side; 2) When the barbel ligament is broken from the larvae side; 3), when the tie is broken from the side of the lock.
1) In the first case, everything is quite simple, either by touching, placing your hand under the bumper, placing the antennas on the hinge, it is not so simple, or below, see page 2 and page 3 2) In the second case, the situation becomes a little more complicated, we take pliers in hand, we push the hand from below behind the bumper, grab the pliers by the plastic rod and carefully, trying not to overdo it and break the remaining tendrils on the rod from the lock, first turn the stop counterclockwise to make a characteristic click. the lock is open, then clockwise and pull the hood up. the hood is open if the antennas are broken and the rod has finally come off, see below page 3. 3) In the third case, the task becomes even more difficult, you will need a long slotted screwdriver, or a device like mine
I made this from the handle of a bucket, the wire there is just thick, strong, not very bent, in a word, what you need. In the vastness of the drives, which only the device was not invented to open this ill-fated hood))
Push the screwdriver or adapter through the grille, use a flashlight to look at the hinge from which the plastic rod has popped out, separate this hinge from the iron locking mechanism bars, then secure the screwdriver or adapt it between the antennas and twist in the same way as in the second case, first against the clock to click, then turn on and pull out the hood. the hood is open.
Now to install the new link you need to remove the plastic guard from the top of the grille, it is attached to 6 clips, we screw in a screwdriver, get them and then pull the clip out.
For convenience, you can still remove the radiator grill yourself; to do this, after we have the clamps, pull the grill towards you to get off the latches. We remove, install the linkage, check the ignition key. everything is working.
Another small note: the hinges of the purchased rod do not rotate properly in the cylinder and lock antennas, the rod flies when the ignition key is turned, so I flip the hinges from my own rod, since they are already designed for dozens or even hundreds of hood holes.
By the way, as I said, Ford does not sell the pull rod separately, but only with the lock lock number 1355231, at the moment it costs R3,000 per name, since I ask the Exist player that I don’t even want to look. The Dominant traction is sold separately as FO13055231 and is exactly the same in appearance as the original as it only required 257 wood for all the fun, that's no sin.
Sources
- https://FokSevmash.ru/hodovaya-chast-i-transmissiya/kak-razobrat-klyuch-ff2.html
- https://DriverTip.ru/repair/kak-zamenit-batarejku-v-klyuche-zazhiganiya.html
- https://akord-auto.ru/remont-i-obsluzhivanie/zamena-batarejki-v-klyuche-ford-fokus-2.html
- https://kip-pribor.ru/remont/pomenyat-batarejku-v-klyuche-ford-fokus-2.html
- https://SpecTorg.su/instrumenty/kak-razobrat-klyuch-ff2.html
- https://Acums.ru/batareyki/zamena/v-klyuche-ford-fokus-2-ford-focus-2-restayling-i-dorestayling
- https://AvtoChehol.su/remont-i-obsluzhivanie/zamena-batarejki-v-klyuche-ford-fokus-2.html
- https://syzran-avto.ru/ford-focus/kak-otkryt-klyuch-ot-ford-fokus-2-i-pomenyat-batarejku.html
- https://tuning-mg.ru/dvigateli/kak-pomenyat-batarejku-v-klyuche-ford.html
- https://razborov.net/ford/kak-razobrat-klyuch-zazhiganiya-ford-fokus-2.html
Diagnostics
To carry out technological manipulations of this kind requires the involvement of experienced electronics engineers from authorized service stations using specialized equipment and devices. This makes it possible to carry out high-quality verification work. For this purpose, using a special radar device, the characteristics and level of the signal sent by the key fob are determined. This process involves directing the remote control to the diagnostic receiving mechanism and testing each function of the key fob unit in turn.
