Car exterior Nissan Teana first generation known as J31, is distinguished by discreet elegance and smooth body lines. One of the key elements that completes the silhouette of the rear of the sedan is the decorative trim on the trunk lid. This element is often called molding, and it performs not only an aesthetic function, but also serves as protection against minor scratches and chips on the edge of the lid.

Over time, standard molding may lose its appearance: the plastic fades, cracks appear from temperature changes or mechanical stress, and the adhesive tape no longer holds the part. Owners Nissan Teana J31 you have to face the need to find a high-quality analogue or original spare part. Understanding the design, materials and installation nuances will help you avoid mistakes during replacement.

Functional purpose and design features

Trunk lid molding on model Teana J31 is a long strip that runs along the top edge of the lid, often hiding the joint between metal and glass or covering the lock. Depending on the vehicle configuration, this element can be made of plastic with imitation chrome or glossy black polymer. The main task of the part is to mask technological gaps and protect the locking area.

Structurally, the element is attached mainly to double-sided tape or special latches. It is important to note that the geometry of the molding for J31 has curves that follow the shape of the body. Any attempts to bend the part without heating can lead to its deformation and the impossibility of a tight fit to the surface.

If the molding is damaged, not only the appearance, but also the tightness of the lock area is affected. Moisture can get inside the mechanism, causing corrosion of cables or electrical contacts.

Types of moldings: original and analogues

There are several categories of linings on the auto parts market. Nissan Teana J31. Original parts (OEM) are distinguished by their exact size and quality of plastic that will not fade in the sun. However, their cost is often high, and stock availability may be limited due to discontinued model production.

Similar products from third-party manufacturers offer more affordable prices. The quality of the plastic in these options varies: some brands use high-quality ABS, others use cheap polypropylene, which becomes brittle in the cold. Be sure to check reviews for a specific supplier before purchasing.

There are also custom options, such as stainless steel or carbon-coated moldings. Such parts change the style of the car, but require careful adjustment, since their geometry may differ from the factory one.

  • Original molding - ideal geometry, durable material, high price.
  • High-quality analogues - a balance of price and quality, nuances in color are possible.
  • Cheap copies risk fading, deformation and poor fit.

Diagnosis of condition and selection of a new part

Before you go shopping, you need to carefully examine the current condition of the molding. Often the problem is not the part itself, but the loss of adhesion of the adhesive layer. If the plastic is intact but has come off, it may be enough to clean the surface and apply new high-quality tape.

If the molding shows cracks, chips, or has lost its shine, replacement is inevitable. When choosing a new part, pay attention to the color. The plastic on the rear lid may differ from the body color if the car has been repainted, but the molding usually has its own standard shade.

It is important to check the package: in some cases, new fasteners or rubber seals are sold along with the molding. The absence of these small elements may result in the new part not fitting into place.

⚠️ Attention: Do not buy molding β€œby eye” based on the photo. Make sure that the part number exactly matches your year of manufacture and body type Teana J31, since in different years of production there may have been minor changes in the fastening.
πŸ“Š What molding are you planning to install?
  • Original Nissan
  • High-quality analogue
  • Custom (chrome/carbon)
  • I won't change

Preparation for installation and necessary tools

The process of replacing molding requires care and the availability of certain tools. You don't need a complicated workbench, but you can't do without a hair dryer and degreaser. The quality of the surface preparation determines how long the new part will last on the trunk lid.

Collect the necessary kit before starting work. You will need a hair dryer (or a powerful household one), a set of plastic spatulas for removing parts, a degreaser (alcohol or anti-bitumen), new high-quality double-sided tape (for example, 3M) and a rag.

If you plan to replace the molding with a custom version, check to see if it needs to be adjusted to length. Sometimes the edges need to be carefully trimmed so that they do not protrude beyond the contours of the lid.

  • Construction hair dryer - for softening old glue and bending plastic.
  • Plastic spatulas - for safe dismantling without scratches.
  • Degreaser - to prepare the surface for the sticker.

β˜‘οΈ Preparation for replacing molding

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Step-by-step instructions for dismantling and installation

Start by carefully removing the old molding. If it is held on with tape, heat it with a hairdryer to a temperature of about 60-80 degrees. This will soften the adhesive layer and allow you to pry the part off with a plastic spatula without effort. Do not use metal tools to avoid damaging the varnish on the lid.

After removal, it is necessary to completely remove any remaining old glue. This is the most time-consuming stage. Use special removers or heat to clump the glue and then remove them. The surface should become perfectly smooth and clean.

Before applying the new molding, place it on the lid without tape to ensure correct positioning. Mark the boundaries with a marker or masking tape. This will help avoid misalignment during final installation.

Apply new double-sided tape to the inside of the molding. Remove the protective film and carefully place the part along the markings. Press the molding firmly along its entire length, especially at the bends.

⚠️ Attention: After installation, do not open or close the trunk for at least 24 hours to allow the adhesive to fully cure and gain maximum strength.
What to do if the molding doesn't hold up?

If the new molding comes off, check to see if there is any old adhesive or dirt remaining. It is also possible that the plastic is too hard and does not follow the curve of the lid. In this case, heat the molding with a hairdryer, give it the desired shape and hold it in this position until it cools down.-->

Common errors and how to fix them

One of the common mistakes is insufficient heating of the plastic during installation. Cold molding cannot follow the complex curve of the lid Teana J31, which causes gaps to form at the edges. This is not only unsightly, but also leads to rapid peeling.

Another problem is using cheap tape. Cheap tapes quickly lose their adhesiveness when exposed to ultraviolet radiation and temperature changes. Always choose trusted brands such as 3M or Hi-Gear.

Sometimes owners try to glue molding over old paint that has begun to peel. This will cause a piece of paint to come off along with the molding. Always check paint adhesion before work.