Complete analysis of removing the steering wheel on a Nissan Murano Z50

Many crossover owners Nissan Murano second generation (Z50 body) are faced with the need to remove the steering wheel. This may be necessary to replace airbags, install a sports steering wheel, or perform complex diagnostics on the vehicle's electrical system. The process seems simple only at first glance, but the design of the steering column of this car has its own characteristics that must be taken into account.

Failure to do so may cause the airbag squib to deploy, resulting in serious injury and financial loss. In addition, modern security systems Nissan equipped with rotation angle sensors, which require careful attention when disassembling. In this article, we will analyze each stage of the work in detail so that you can safely complete the task yourself.

It is important to understand that the steering wheel is Murano Z50 It is not simply attached to splines, but has a complex fixation system with a nut and a locking mechanism. Any deviation from the sequence of actions can lead to damage to the airbag contact strip, the replacement of which is quite expensive. Therefore, before starting work, it is necessary to carefully prepare and ensure complete safety.

Preparing the car and necessary tools

Before proceeding with actual dismantling, it is necessary to ensure safe working conditions. First of all, you need to de-energize the airbag system to prevent accidental deployment. To do this, disconnect the negative terminal of the battery and wait at least 10-15 minutes until the capacitors in the safety system are completely discharged.

You will need a set of specialized tools, as a standard set of wrenches may not be enough. Pay special attention to the presence of plastic spatulas for dismantling the trim, so as not to damage the fragile plastic of the interior. Also, do not forget about a torque wrench, which will be required to properly tighten the steering wheel nut during reassembly.

• 🛠️ Set of sockets and extensions (main size 10 mm and 24 mm)
• 🔧 Plastic mounting spatulas for removing decorative panels
• 🔦 Powerful flashlight for illuminating hard-to-reach places under the steering wheel
• 📏 Torque wrench for precise tightening of fasteners

Work should be carried out on a flat surface, preferably in a well-lit room or garage. Make sure the steering wheel is in the neutral position, meaning the car's wheels are level. This is critical to maintaining the correct orientation of the airbag contact strip.

⚠️ Warning: Never attempt to remove the steering wheel without disconnecting the battery for at least 15 minutes. Even when the engine is turned off, the airbag system may retain a dangerous charge of electricity.

If you are planning to install a sports steering wheel, think in advance about the need to adapt the contact pad. In some cases, the stock wiring may not be suitable for the new media or cruise control buttons. Check the compatibility of parts before starting work to avoid unnecessary costs.

Removing decorative trims and accessing the airbag

The next step is to remove the plastic steering column covers. On Nissan Murano Z50 they are attached to special latches, which can be quite tight. Carefully pry the lower part of the casing with a mounting spudger and pull towards you until the latches disengage.

After removing the lower part, it is necessary to remove the upper cover. Please note that under it there may be connectors for connecting control buttons on the steering wheel. Be extremely careful not to damage the fragile contacts when disconnecting wires. If the pad is tight, try rocking it slightly from side to side.

• 🔍 Carefully inspect the places where the latches are attached before starting dismantling
• 👐 Use gentle movements to avoid breaking the plastic clips
• 🔌 Carefully disconnect the connectors by pressing the latches rather than pulling the wires

After removing the covers, access to the airbag mounting bolts becomes available. There are holes on the sides of the steering wheel through which you will need to insert a key or screwdriver to release the airbag latches. This is the most crucial moment, since the slightest mistake can lead to the firing of the squib.

Features of mounting the airbag on the Z50

On the Murano Z50, the airbag latches are located on both sides. To unclip them, it is best to use a thin screwdriver or a special key. Insert the tool into the hole until it stops, press the latch and at the same time pull the pillow towards you. Do not use too much force to avoid damaging the pillow body.

It is important not to place the removed airbag upside down or near heat sources. Keep it in a safe place until all work is completed. This will ensure the safety of the squib and prevent accidental damage to the electronics.

Disabling Electronics and Removing the Airbag

When the latches are released, gently pull the airbag towards you. It should move away from the handlebars, but don't lift it off completely right away. Underneath there is an electrical connector that must be carefully disconnected. This is usually a yellow or orange connector that has a locking mechanism.

Press the connector locking tab and pull it out smoothly. Make sure the wire is not stretched or pinched. If you plan to change the pillow, then at this stage you can completely remove it and put it aside. If you are simply removing the steering wheel, then it is better to hang the pillow on a safe hook or place it on a soft surface.

• 🔌 Disconnect connectors only after all electrical systems have completely stopped
• 🛡️ Avoid getting moisture on the airbag connector contacts
• 🧼 If the contacts are oxidized, clean them with a special liquid before reassembling

After disconnecting the airbag connector, you can proceed to removing the steering wheel itself. However, before doing this, you need to make sure that you have not damaged the contact spiral (cable) of the pillow. She is behind the wheel and rotates with him. When turning the steering wheel, it can get stuck or break if you are not careful.

⚠️ Attention: It is strictly forbidden to rotate the steering wheel after disconnecting the airbag and until the new steering wheel is completely installed! This will cause the contact tape to break, which is very expensive and requires replacing the entire steering column.

In some cases, it may be necessary to remove the top instrument panel for easier access to the connectors. This depends on the specific vehicle configuration and year of manufacture. If you feel that access is difficult, it is better to take the time to remove the panel rather than risk damaging the wiring.

Removing the fastening nut and dismantling the steering wheel

Now that the airbag is disabled and stowed away, you can access the steering wheel nut. It is located in the center of the steering wheel and measures 24 mm. To unscrew it, use a socket and a wrench or ratchet. Unscrewing is done counterclockwise.

The nut may be very tight and may require considerable force. If you don't have a long lever, use a wrench extension pipe. The main thing is not to break the thread, so act smoothly and evenly. After unscrewing the nut, remove it along with the washer and put it in a safe place.

After removing the nut, the steering wheel may not immediately come off the splines. It often sticks or sticks due to vibrations and time. To remove it, use a special puller or gently tap with a hammer on the inside of the steering wheel (not on the edges or on the plastic lining). Impacts should be applied to the metal part of the steering column or to the inner rim of the steering wheel.

• 🔨 Use a hammer with a rubber attachment to hit the steering wheel
• 🔩 Use a steering wheel puller for safe and efficient removal
• 📐 Make sure that the steering wheel is not skewed when removing, so as not to damage the splines

If you are using a puller, screw the screws into the threaded holes on the handlebar that are usually covered with decorative caps. Gradually tighten the center screw of the puller until the steering wheel comes off the splines. This is the safest method, eliminating the risk of damage to parts.

After removing the steering wheel, carefully inspect the splines on the steering column and on the steering wheel itself. They must be clean and undamaged. If there are traces of corrosion or scuffing, they must be cleaned with fine sandpaper and lubricated with a special lubricant before installation.

Working with contact tape and rotation angle sensors

The airbag contact strip is the most sensitive element of the system. It provides an electrical connection between the stationary part of the car and the rotating steering wheel. On Nissan Murano Z50 it is located in a housing that is attached to the steering column.

If you do not plan to change the steering wheel, but simply remove it to access other components, then you do not need to remove the contact tape itself. However, if you are changing to a different type of handlebar (for example, a sports handlebar), you may need to adapt or replace the tape. Make sure the new tape is compatible with your car model.

The steering angle sensor (SAS) is also located in this unit. It transmits information about the steering wheel position to the airbag and ESP control unit. When dismantling the steering wheel, it is important not to damage this sensor or disrupt its calibration. After installing a new steering wheel, a sensor training procedure may be required.

• 🔧 Do not disassemble the contact strip body unless necessary
• 📊 Make sure the wires going to the SAS sensor are intact
• 🔄 After assembly, the rotation angle sensor may need to be calibrated

In some cases, when replacing the steering wheel, an error appears on the dashboard related to the airbag. This occurs due to desynchronization of the rotation angle sensor. To eliminate the error, you need to connect a diagnostic scanner and perform the reset and learning procedure.

⚠️ Attention: If the airbag light comes on after installing the steering wheel, do not try to fix it by simply disconnecting the battery. This can lead to malfunctions of the ESP and ABS systems. Be sure to perform diagnostics and calibration through the scanner.

If you are using a sports steering wheel adapter, make sure it does not block the contact strip from rotating all the way. This can lead to its breakage when turning the steering wheel to its extreme position. Check the steering wheel's rotation range before tightening any fasteners.

Installation of a new steering wheel and final assembly

The process of installing a new steering wheel is a mirror image of the dismantling process, but requires even more care. First, place the steering wheel on the steering column splines, following the marks you made earlier. Make sure the steering wheel sits level and fully on the splines.

Tighten the steering wheel nut using a torque wrench. Tightening torque for Nissan Murano Z50 usually around 45-50 Nm. An under-tightened nut can lead to play in the steering wheel and its displacement during movement, which is dangerous for driving.

After tightening the nut, install the decorative cap in the center of the steering wheel. Then connect the airbag connector and carefully insert the airbag into the seat until the latches click. Make sure the pillow fits snugly and is not distorted.

• 🔩 Tighten the steering wheel nut strictly to the torque specified in the service book
• 🛠️ Check that all connectors are securely fastened before turning on the power
• 🚗 Test run the engine and check for errors

Install the lower and upper plastic steering column pads. Make sure all latches are in their seats. If the pads do not fit into place, do not use force, but check to see if there is anything inside that is in the way. The wiring or connectors may not have been tucked into the correct position.

Checking functionality after assembly

After connecting the battery, turn on the ignition. The airbag light on the dashboard should come on and then go off after a few seconds. If the light is constantly on or blinking, then there is a problem with the contacts or sensor. Check the connectors and, if necessary, perform diagnostics with a scanner.

If you have a multimedia system with steering wheel buttons, check their functionality. Press each button and make sure they respond. If the buttons do not work, check the connectors under the steering wheel and the integrity of the wiring.

Common mistakes and how to avoid them when replacing a steering wheel

One of the most common mistakes is turning the steering wheel after the airbag is turned off. This leads to jamming or breakage of the contact tape. Never check the operation of the steering wheel until the airbag is fully installed and the battery is connected.

Another common mistake is improperly tightening the steering wheel nut. Tightening too tightly can damage the splines, while tightening too loosely can cause play. Use a torque wrench and follow the manufacturer's recommendations. Don't rely on the "feel" of the puff.

Sometimes owners forget about the need to calibrate the steering angle sensor after replacing the steering wheel. This can lead to errors in the ESP and ABS systems. If after replacing the steering wheel the lights on the panel come on, do not ignore them, but contact a specialist for diagnostics.

• 🚫 Do not turn the steering wheel without the steering wheel installed
• 🔧 Do not tighten the nut by eye, use a torque wrench
• 🔍 Don't ignore errors on the dashboard after assembly

It is also worth noting that when purchasing a non-original steering wheel, compatibility problems may arise. Make sure the steering wheel you choose is suitable for your model Nissan Murano Z50. Different years of manufacture may have differences in fastenings and electrical components.

If you are not confident in your abilities or do not have the necessary tools, it is better to entrust the work to professionals. Errors when working with a security system can cost more than the services of a specialist. The safety of the driver and passengers should always come first.

How to disable the airbag on a Nissan Murano Z50?

To disable the airbag, you must disconnect the negative terminal of the battery and wait at least 15 minutes. This will discharge the capacitors in the security system and prevent accidental activation of the squib.

Is it possible to remove the steering wheel without a special puller?

It is possible to remove the steering wheel without a puller, but it requires caution. You can gently tap the inside of the steering wheel with a hammer or use a lever. However, using a special puller is a safer and more effective method that eliminates the risk of damage to parts.

Do I need to calibrate the steering angle sensor after replacing the steering wheel?

Yes, after replacing the steering wheel, the steering angle sensor (SAS) often needs to be calibrated. This is necessary for the correct operation of the ESP and ABS systems. It is best to perform calibration using a diagnostic scanner.

What should I do if the airbag light comes on after assembly?

If the lamp lights up, check all connectors and contacts. Make sure the airbag is installed correctly. If the problem persists, you need to connect a diagnostic scanner and read errors to identify the problem.