Sedan owners Nissan Almera G15 generations often face the problem of wear and tear on the plastic shell of the remote control. Intensive use, falls or simply exposure to ultraviolet radiation lead to the fact that the case loses its presentable appearance, the buttons begin to stick, and the structure itself becomes loose. This is not just an aesthetic defect, but also a risk of loss of functionality of the electronic unit.
Replacement key body - a procedure that requires care, since inside there is not only a battery, but also an immobilizer microchip, which is responsible for starting the engine. Incorrect removal of this element may result in the need for a complex and expensive reflashing of the vehicle's security system. In this article we will analyze all the nuances of choosing a new shell and the subtleties of the process of transplanting electronics.
Why does the key body fail on a Nissan Almera G15?
The main cause of shell damage is mechanical wear. Remote controller Nissan Almera often carried in a pocket along with keys to other premises, coins and other metal objects. This causes scratches, chips and abrasion of the applied paint. Over time, the plastic becomes brittle and can crack with the slightest force.
The second important factor is environmental impact. Hot sun or frost affect the properties of plastic, making it less elastic. Buttons made of soft silicone or rubber deform over time, causing poor contact with the electronics. Sometimes the problem lies not in the case itself, but in the oxidation of the contact pads inside.
Often, owners are faced with the fact that the key stops opening doors or starting the engine, although the battery is new. In such cases, it is often the fault worn out body, which does not provide proper clamping of the board to the buttons. If you notice that pressing requires excessive force, it's time to think about replacing the shell.
Types of housings and methods of replacing them
There are two main types of solutions on the auto parts market: complete kits with electronics and empty shells. Complete kits, often called ready-made keys, contain an already configured chip and board. This is the simplest option, but it requires mandatory synchronization with your car's immobilizer unit.
Empty shells are a more cost effective and flexible option. You buy only the plastic part and transfer your components into it: board, chip and battery. This approach allows you to maintain factory settings and avoid the complex procedure of binding a new chip if you do not plan to contact the dealer.
When choosing a new part, pay attention to the quality of the plastic. Cheap analogues may have uneven seams, causing the key to play or not close completely. For model Nissan Almera G15 It’s better to choose original spare parts or high-quality replicas from trusted manufacturers such as Keyless Entry or Silca.
- Case cracked
- Buttons stick
- Lost chip
- Key fob not working
Step-by-step instructions for transplanting electronics
The process of replacing the case does not require any special tools, but you will need a flathead screwdriver or a special plastic tool to open it. Start by removing the metal key, if it is a switch key. In some modifications Nissan Almera it is secured with a screw that must first be unscrewed.
Carefully pry the halves of the old housing apart, using the tool at the joints. Be extremely careful not to damage printed circuit board and do not bend the legs of the buttons. As soon as the case opens, remove all components in a strictly defined order: first the chip, then the battery, then the board itself.
It is important to note the position of the chip. It can be built into the board or located in a separate plastic cup inside the case. If the chip is removable, move it into the new case, observing the orientation. Install a new battery, making sure its polarity matches the markings on the board. Assemble the new housing, snapping it tightly into place.
☑️ Preparation for replacement
Programming and binding a new key
If you replaced only the case and left the electronics at the factory, no additional programming is required. The car will recognize the old immobilizer chip automatically. However, if you installed a new chassis with a complete board, a synchronization procedure will be required. You can do this yourself or turn to professionals.
Self-binding for Nissan Almera often involves sequentially pressing buttons in a specific order while the ignition is on. Usually you need to insert the key into the lock, turn it several times, then press the door open button on the remote control. The exact sequence depends on the year of manufacture and firmware version of the immobilizer.
In some cases, especially when replacing a chip, the use of diagnostic equipment may be required. The scanner reads the vehicle's VIN code and writes it into the memory of the new chip. Without this step, the engine will not start, since the security system will not see the enabling signal. Remember that if the chip is completely replaced, old keys may stop working if they are not re-registered.
What to do if the key is not programmed?
If after all the manipulations the key does not respond, check that the chip is installed correctly. Sometimes it needs to be bent or the battery replaced. In difficult cases, you will need the help of a specialist with a dealer scanner to reset immobilizer errors.
⚠️ Warning: Do not try to solder or repair the old chip if it is cracked. This may result in the loss of the unique code, and it will be impossible to regain access to the vehicle without replacing the entire immobilizer unit.
Comparison of the cost of repair and purchase of a new key
Let's consider the financial aspects. Replacing only the case and replanting your board is the most economical option. The cost of the shell itself varies from 500 to 2000 rubles, depending on the manufacturer. If you add the cost of a new battery, the total amount will be minimal.
Buying a new programmable key assembly will cost significantly more. You will have to pay for the key itself, the services of a flashing specialist and, possibly, diagnostics. In dealerships, this procedure can cost several times higher than in specialized key service centers.
The table below shows the estimated cost of various solutions for owners Nissan Almera G15:
| Type of service / Spare parts | Approximate price (RUB) | Complexity |
|---|---|---|
| Housing replacement (empty shell) | 600 - 1500 | Low |
| Complete key set (without firmware) | 2500 - 4000 | Average |
| Programming by a master | 1500 - 3000 | High |
| Replacement at the dealer (key + work) | 8000 - 15000 | High |
Tips for extending the life of your remote control
To ensure that your new housing lasts a long time, follow simple operating rules. Avoid getting moisture inside the case. If the remote control gets wet, immediately remove the battery and dry the device. Moisture causes corrosion of the contact pads, which will eventually cause the buttons to fail.
Change the battery regularly without waiting until it is completely discharged. A weak battery forces you to press the buttons harder, which accelerates the wear of the membrane. Use high-quality CR2032 batteries from well-known brands, as cheap analogues can leak and damage the board.
Do not carry the remote control in the same pocket with heavy objects. Impacts and pressure may cause the case to deform or damage internal components. If you notice that the key has begun to fall apart, replace it immediately so as not to lose the immobilizer chip.
To protect the new case from scratches, you can use a silicone case, which is sold at most car dealerships.
⚠️ Warning: Do not use solvents or harsh chemicals to clean the case. The plastic may become cloudy or sticky, ruining the appearance of the remote forever.
Transplanting the original board into a new case is the most reliable way to maintain the functionality of the key without unnecessary programming costs.
Common mistakes when replacing yourself
One of the most common mistakes is the loss of the immobilizer chip. Often it is located in a separate recess and falls out when the case is opened. If you don't find it right away, the key will stop starting. Always work on a clean surface and assemble parts one at a time.
Another mistake is incorrect installation of the board in the new case. Sometimes the button contacts do not align with the protrusions on the board, which leads to incorrect operation. Before latching the case, check that all buttons are pressed softly and return to their original positions.
Sometimes owners forget to peel off the protective film from the chip or do not insert it all the way. This may cause a signal reading error. Make sure that the chip fits tightly to the board or is fixed in its housing without gaps.
How can I find out what chip is in my key?
To find out the type of chip, you need to open the case and look at the markings on the chip. For Nissan Almera G15 the most commonly used chips are 4D67 or 4D68. You can also use a scanner that will show the type of transponder.
Is it possible to replace the body without voiding the car's warranty?
Yes, replacing the key body does not affect the car's warranty, since it does not interfere with the car's electronics. However, if you damage the ignition switch or immobilizer unit during installation, the warranty on these parts may be void.
What should I do if the buttons stop pressing after replacing the case?
Check if the board is installed correctly. The contacts may not match. Try slightly bending the springs under the buttons or replacing the membrane. Sometimes the problem is a battery that you forgot to install or that is dead.
Do I need to go to a service center to replace the case?
No, if you only change the case and leave the original board and chip, there is no need to go to the service center. You can do this yourself in 15-20 minutes. You only need to go to the service center to program a new chip or completely replace the key.
How long does it take to program a new key?
The programming procedure with a specialist takes from 20 minutes to an hour. This depends on the complexity of the immobilizer system and the need to reset errors. Linking yourself may take longer due to trial and error.