Rear wiper on Nissan Murano The second generation (Z51 body) plays a critical role in ensuring safety when driving off-road or in rainy weather. Many crossover owners underestimate this element, considering it to be of secondary importance, until they are faced with a situation where a dirty rear view becomes the cause of an accident. Unlike the front blades, the rear wiper mechanism often operates in more harsh conditions, being exposed to salt, dirt and moisture.
Design of the windshield wiper drive Nissan Murano Z51 has its own characteristics that distinguish it from other models of the concern. Incorrect selection of spare parts or ignoring signs of wear can lead not only to the wiper stopping, but also to expensive electronic repairs. In this article we will look at all aspects of operating, replacing and repairing a rear wiper for your car.
Design features of the rear wiper drive
Rear wiper drive mechanism Nissan Murano Z51 is a complex system consisting of an electric motor, gearbox and rods. The electric motor is located inside the luggage compartment, behind the rear door trim, which requires careful disassembly. The gearbox converts rotational motion into reciprocating motion, ensuring full stroke of the brush along the glass.
Particular attention should be paid wiper gearbox, since it is he who most often fails under load. The plastic gears inside the housing wear out or break over time, especially if the brush is frozen to the glass in winter. Also a critical element is power connectorwhich is in an area of constant exposure to moisture and dirt.
When diagnosing a malfunction, it is necessary to check not only the motor itself, but also the condition wiper rods. Curvature of the rod can cause the brush to follow an incorrect path or fail to clean the glass at all. Adjusting the angle of the lever also affects the clamping force.
The main causes of rear wiper failure
Rear wiper failure Nissan Murano Z51 rarely happens suddenly. This is usually preceded by characteristic sounds or delays in operation. The most common cause is burnout fuse in the mounting block, which happens when there is a short circuit or an attempt to turn on the mechanism when the glass is icing.
Another common problem is wear on the brush commutator inside the motor itself. Over time, the graphite brushes wear out, contact is broken, and the engine stops working. Also worth checking connection connector, where contacts often oxidize due to water entering through the rubber seals.
Sometimes the problem lies in the wiper lever. If it is accidentally bent or dropped, the geometry of movement changes and the mechanism jams. In this case, attempting to turn on may result in the motor burning out. Check whether the lever touches the body parts when moving.
- ✅ Oxidation of contacts in the drive connector due to moisture
- ✅ Wear of plastic gears in the gearbox during winter operation
- ✅ Cable break or drive rod deformation
- ✅ Fuse blown due to motor overload
Selecting suitable replacement components
When choosing a spare part to replace the rear wiper with Nissan Murano Z51 It is important to focus on original numbers or high-quality analogues. Original wiper motor provides the best compatibility with vehicle electronics and durability. The part number can often be found on the housing of the old engine.
If you are considering alternatives, pay attention to brands that specialize in glass cleaning systems. Low-quality Chinese copies often have a weak motor or a fragile plastic gearbox. Also upon purchase rear wiper blades make sure it has the correct mounting shape for the Z51 body.
It is important to note that some rear wiper models may have different arm lengths or angles. Before ordering, be sure to check the geometry of the part. For Nissan Murano This generation includes both complete assembled kits and individual units for repair.
- The motor stopped working
- The plastic gear is broken
- Contacts have oxidized
- Brush does not fit
Step-by-step instructions for replacing the windshield wiper motor
Replacing a rear wiper motor is a task that requires precision and a basic set of tools. You will need socket wrenches, screwdrivers, and possibly a clip remover. Start by opening the trunk and removing the plastic trim on the rear door to gain access to the mechanism.
Before starting work, be sure to turn off negative battery terminalto avoid short circuit when disconnecting the connector. Remove the decorative cover of the wiper arm, unscrew the nut securing the arm and carefully remove it. Now you see the drive mechanism mounted on the glass.
☑️ Preparation for replacement
Disconnect the electrical connector from the old motor. It can be secured with a latch that needs to be carefully pryed off with a screwdriver. Unscrew the bolts securing the motor to the bracket and remove it. Install the new assembly in the reverse order, but do not tighten the lever nut all the way until the operation is checked.
⚠️ Attention: When removing the lever, use a special puller or gently rock it without using excessive force. Rough removal can lead to deformation of the gearbox spline shaft.
After installing the new motor, connect the connector and apply power temporarily to check the lever travel. Make sure that the brush does not hit the edges of the glass and stops in the correct position. Only after this can you finally tighten the lever fastening nut and assemble the door trim.
What to do if the new motor does not work?
If the new motor does not work immediately after installation, check the fuse and the presence of voltage in the connector. The problem may not be with the motor, but with the wiring or switch on the steering column.
Troubleshooting brush pressure problems
Even a working motor will not ensure clean glass if clamping force brushes are not enough. On Nissan Murano Z51 this often happens due to fatigue of the spring in the lever itself. Over time, the spring stretches and the brush begins to “float” on the glass, leaving streaks.
To increase the force, you can gently tighten the spring using pliers. Do it slowly and gradually, checking the result at each stage. It is also worth paying attention to the condition rubber brushes, which over time becomes tanned and no longer adheres to the curved glass of the rear door.
If the lever is corroded or damaged, the spring may be stuck in the wrong position. Clean the mechanism from dirt and apply a special lubricant for metal springs. This will restore mobility and proper pressure on the glass.
- ✅ Checking the integrity and elasticity of the lever spring
- ✅ Cleaning the mechanism from dirt and corrosion
- ✅ Replacing the worn rubber band on the brush
- ✅ Lever angle adjustment for better contact
Operation in winter and prevention
Winter is the most difficult time for a rear wiper. Ice and snow can freeze to the glass, placing enormous stress on the motor. It is strictly prohibited to turn on the wiper in such a situation. This is almost guaranteed to cause damage. plastic gears gearbox or combustion of motor windings.
Always manually remove snow and ice from the windshield before operating the windshield wiper. Use de-icing fluids, but do not allow them to come into contact with the rubber seals, as this may accelerate their aging. Check the condition regularly electrical contacts and, if necessary, treat them with a protective spray.
If you plan to park for a long time in cold weather, it is recommended to unfasten the wiper arm from the glass or place it in a vertical position (if the design allows this) so that the rubber does not freeze. This will extend the life of the rubber elements and prevent jerking when starting.
⚠️ Attention: Never turn on the rear wiper if the glass is covered with a thick layer of ice. First, warm up the interior and use the Rear Window Defrost setting to melt the ice.
Before the onset of the winter season, apply a hydrophobic coating to the glass. This will reduce the accumulation of snow and ice, reducing the load on the wiper mechanism and making the motor easier to operate.
Specifications and Compatibility
To select the correct spare parts, you need to know the technical parameters of your car. Rear wiper Nissan Murano Z51 has specific dimensions and electrical characteristics. Below is a table with basic data to guide your selection.
| Parameter | Meaning | Comment |
|---|---|---|
| Brush length | 14 inches (350 mm) | Standard size for Z51 |
| Mounting type | Side Hook | Unique to tailgate |
| Supply voltage | 12 V | Standard on-board network |
| Operating mode | Intermittent/Continuous | Controlled via the comfort unit |
| Original part number | 27450-1AA0A | Motor assembly (example) |
When searching for analogues, pay attention to the specified parameters. An incorrectly sized blade may cause it to catch on the bodywork or may not be able to clean the entire glass area. It is also important that the electrical connector fits the standard wiring without adapters.
Selecting the correct blade length and mounting type is critical to effectively cleaning the rear window without damaging the body.
Frequently asked questions from Nissan Murano Z51 owners
Owners Nissan Murano Often faced with similar questions regarding rear wiper maintenance. We have collected answers to the most common ones to help you understand the nuances of operation.
Why does the rear wiper stop in the wrong position?
This may be due to a violation of the end of stroke adjustment in the gearbox mechanism. Sometimes reflashing the control unit helps, but more often it requires replacing the motor assembly or adjusting the position of the lever relative to the shaft spline.
Can the front blades be used on the rear wiper?
No, mounting design and blade length for rear window Nissan Murano Z51 unique. The front brushes are of the wrong size and mounting type, which will result in ineffective operation and possible damage to the mechanism.
How often should the rear wiper be replaced?
It is recommended to completely change the rubber band or brush every 6-12 months, depending on operating conditions. The motor can serve for many years if it is not subjected to stress when the glass freezes.
What to do if the wiper works jerkily?
Jerking usually indicates wear on the gears of the gearbox or insufficient lubrication of the mechanism. Also check that the lever does not touch the glass seal or door trim. In some cases, lubrication of rods and hinges helps.
Is it possible to repair the wiper motor yourself?
Theoretically, you can replace the commutator brushes or lubricate the gears, but this requires disassembling the motor housing. It is often easier and more reliable to replace the motor assembly, since there is no warranty for the restored unit, and labor costs are high.
Timely maintenance and the correct selection of spare parts will ensure reliable operation of the rear windshield wiper on your Nissan Murano Z51. Do not ignore the first signs of malfunction, as this can lead to more serious damage and costly repairs. Regular inspection and prevention will help you avoid problems at the most inopportune moment.