Owners Nissan Primera P12 Often faced with the need to dismantle the rear part of the body. This may be required to replace broken plastic, repair parking sensors, install license plate lights, or paint. The process does not belong to the category of extremely complex, but it has a number of nuances, ignoring which can lead to damage to the latches or the paintwork of the car.
The main difficulty of working with the model P12 consists in the hidden location of some of the fastening elements and the specific shape of the seats. Incorrect force when pulling the bumper often leads to breakage of the plastic caps, which have to be purchased separately. To avoid wasting time and money, you need to carefully study the sequence of actions and prepare the necessary tools before starting work.
Preparing tools and workspace
Before you begin physical impact on the body, it is important to organize your workplace. You will need a spacious area, preferably with a flat surface, where you can freely walk around the car on both sides. Do not attempt this operation in a narrow parking lot or cramped garage without good lighting.
The basic set of tools for dismantling includes screwdrivers with Phillips and flat blades, as well as a special puller for clips. If you don’t have a professional tool at hand, you can use a thin flat-head screwdriver, but you need to work with it very carefully so as not to scratch the paint. You will also definitely need 8, 10 and 12 mm socket heads with a wrench or ratchet.
- 🔧 Phillips screwdriver PH2 for self-tapping screws in arches
- 🔨 Puller for plastic pistons or a thin screwdriver
- 🔩 Set of sockets and ratchet for fastening bolts
- 🧤 Work gloves to avoid injuring your hands on sharp edges
Pay special attention to the condition of your flashlight or portable lamp. In the lower parts of the arch and under the bumper there is often twilight, and you may simply not see hidden fasteners. Lighting should be directional and bright.
⚠️ Attention: Never start unscrewing fasteners until you are sure that you have free access to all corners of the car. Trying to remove the bumper on one side without unscrewing the fasteners on the other will result in the latches breaking.
☑️ Preparation for dismantling
Unscrewing fasteners in wheel arches
The first stage of work is to remove the screws that secure the edges of the bumper to the fender liners (lockers). On Nissan Primera P12 Each arch contains three to five screws, which often become clogged with dirt. Before unscrewing, it is recommended to clean the seats with a brush or water so that debris does not get into the ratchet mechanism.
Use a Phillips screwdriver or socket of the appropriate size. The screws may be stuck, so do not use excessive jerking force to avoid cutting off the head. If the screw does not budge, you can apply a little penetrating lubricant (WD-40) and wait a couple of minutes. It is important to unscrew all the screws until they stop, otherwise when removed the bumper will hang on one bolt and become deformed.
- 🚗 Clean the arches from adhering dirt and snow
- 🔩 Unscrew all the screws around the perimeter of the fender liner
- 👀 Check if there are any hidden screws on the bottom
After removing the screws, you need to bend the edge of the bumper. This is done manually by carefully pulling the plastic away from the body. At this point you should ensure that the side rails are released from their locking position. If the bumper doesn't come off, you may have missed one of the fasteners, which are often hidden at the very bottom of the arch.
Removing the lower protection and mounting bolts
Rear bumper Primera P12 It is attached to the body not only through the arches, but also through the lower part. You need to look under the car and unscrew the bolts passing through the lower plastic protection (fender liner or skirt). Usually there are two of them in the center and one closer to the edges.
Use a 10 or 12 mm socket. The bolts can be hidden under decorative caps, which must first be pryed off with a screwdriver. After unscrewing all the lower points, the bumper should become more movable, but still be held on by the front latches and bolts in the trunk.
At this stage, it is important to check whether there are additional fasteners on the bumper, typical for versions with parking sensors. Parking sensors often have their own latches, which can interfere with the free removal of the part. If you plan to remove the sensors along with the bumper, make sure they are not blocked from the inside.
- Less than 30 minutes
- 30 to 60 minutes
- More than an hour
- Haven't filmed it yet
Unscrewing bolts in the luggage compartment
The most critical part of the job is unscrewing the bolts located inside the trunk. Remove the decorative trims from the sides of the luggage compartment to gain access to the metal body pillars. There you will find two or three bolts on each side that hold the bumper to the body.
Use a 10mm socket. Unscrew the bolts carefully, as they often have long threads and can fall out into hard-to-reach places. If the bolt does not come out completely, do not force it as you may damage the threads in the body. It is better to completely free it from the nuts so that the bumper does not hang on one connection.
- 🚪 Remove the trunk side trims
- 🔩 Unscrew the bolts securing the bumper to the body
- 🔦 Check for hidden screws in niches
- 🧹 Put the unscrewed bolts in a safe place
After removing all the bolts from the trunk, the bumper should only be held in place by the plastic clips. You need to be extremely careful at this stage: a sudden movement may cause the latches to break off or bend.
What to do if the bolts are stuck?
If the bolts in the trunk do not budge, do not use brute force. Use a penetrating lubricant, give it time to work, and then try to gently rock the head. Sometimes lightly heating the bolt with a hairdryer helps, but be careful with the plastic of the trunk trim.
Removing the bumper and disconnecting the electrics
Now that all fasteners have been removed, you can begin the removal process itself. You will need to carefully pull the bumper towards you, freeing it from the guides. Act smoothly, without jerking. The bumper can be held on by several powerful clips that require little effort to disengage.
As soon as the bumper moves away from the body by 5-10 centimeters, stop. Inside you'll see wiring for parking sensors and possibly reverse lights. Do not pull the bumper further until you have disconnected all electrical connectors. This is critically important, as you can break the wires or damage the chips themselves.
To disable the parking sensors, press the connector latch and pull out the plug. If you have a rear fog light that is attached to the bumper, that will need to be removed as well. After turning off the electrics, you can finally remove the bumper by placing it on a soft surface (cardboard or blanket) so as not to scratch it.
⚠️ Attention: When removing the bumper, always hold it with both hands, distributing the weight evenly. If you let go of one side, the bumper may tilt and hit the wheel or asphalt, causing cracks.
The main mistake during removal is trying to tear off the bumper without disconnecting the wiring, which often leads to a break in the parking sensor harnesses.
Table of main fasteners
For ease of perception and verification of the work performed, we suggest that you familiarize yourself with the summary table of fastener locations. This will help ensure that you don't miss a single screw before the final stage of dismantling.
| Location | Fastener type | Tool size | Quantity |
|---|---|---|---|
| Wheel arches (left and right) | Phillips self-tapping screws | Phillips screwdriver PH2 | 4-6 pcs. to the side |
| Lower part (under the bumper) | Hex Bolts | 10 mm head | 3-4 pcs. total |
| Luggage compartment (side niches) | Body mounting bolts | 10 mm head | 2-3 pcs. to the side |
| Inside the bumper (parking sensors) | Plastic clips and plugs | Manual release | Depends on the configuration |
Please note that the number of screws in the arches may vary depending on the year of manufacture Nissan Primera P12 and the presence of factory fender liners. In some versions, the fasteners may be hidden under decorative plugs.
Common mistakes and installation tips
Many owners make the mistake of trying to install the bumper back without first checking the seats. Before installation, be sure to clean the guides from dirt and check the integrity of all plastic clips. If any of the pistons are broken, they need to be replaced with new ones, otherwise the bumper will dangle and make strange sounds on the road.
When reinstalling, it is important to follow the reverse order. First, put the bumper on the guides, then connect the electrical, and only then tighten all the bolts. Do not fully tighten the fasteners all at once; hand tighten all the bolts first to ensure the holes are aligned correctly.
- 🔍 Check the integrity of all plastic pistons
- 🧹 Clean the seats from dirt and rust
- ⚡ Test the operation of parking sensors before complete assembly
- 🔩 Tighten the bolts evenly without over-tightening the plastic
If the bumper sits unevenly after installation or has gaps, do not try to fix it by force. Most likely, you put one of the guides on incorrectly or forgot to unscrew some hidden bolt. Disassemble and reassemble, carefully following the instructions.
⚠️ Attention: Do not use silicone lubricants to lubricate the plastic clips before installation, as this may cause them to slip and loosen the bumper while moving.
Before final tightening of all bolts, have an assistant look at the bumper from the side. It should be symmetrical relative to the body and lights, without distortions.
Frequently asked questions (FAQ)
Below are answers to the most common questions that owners have. Nissan Primera P12 when working with the rear bumper. These tips will help you avoid common problems.
Is it possible to remove the bumper without removing the fender liners?
In most cases, it is impossible to remove the bumper without removing the fender liners, since they block access to the key screws in the arches. However, if you only plan to replace the parking sensors, you can try to unscrew only the lower screws in the arches, but this is inconvenient and risky.
What to do if the plastic caps are broken?
Broken pins need to be replaced. They can be purchased at auto stores or ordered online. It is important to choose a similar type of fastening, since Nissan uses different sizes of clips. It is better to remove old broken pistons completely so that they do not interfere with the installation of new ones.
Do I need to remove the reverse lights to remove the bumper?
Reverse lights are usually attached to the trunk lid or body, rather than to the bumper. Therefore, there is no need to remove them. However, if you have additional lighting or fog lights installed in the bumper, they will have to be turned off.
How to properly store a removed bumper?
It is best to place the removed bumper on a soft surface (cardboard, blanket) with the inside facing up. Do not place it on its edge or face to avoid scratches or cracks. Store it in a dry place, away from direct sunlight.