Question 1

How to remove the navigation antenna on Toyota Highlander?

Accepted Answer

A proper procedure to remove the navigation antenna starts with aligning the front wheels ahead and disconnecting the negative battery cable. Wait for 90 seconds to avoid Air Bag release before continuing. A few systems within the network might need initialization steps after reattaching the cable. Start by removing the lower No. 3 steering wheel cover and proceed with the removal of the lower No. 2 steering wheel cover before taking off the steering pad. The next step is to unfasten both steering wheel assembly and steering column cover components. Next separate the turn signal switch assembly with spiral cable sub-assembly before both instrument cluster finish panel assembly and combination meter assembly extraction. The center instrument panel register assembly must be removed before proceeding with the center instrument cluster finish panel assembly extraction step based on Smart Key System installation. The heater control and accessory assembly must be uninstalled for manual systems while automatic air conditioning controls need to be taken out. The installer should disassemble the navigation receiver assembly with bracket and remove both the front door scuff plate LH and the cowl side trim sub-assembly LH. The technician removes both the lower instrument panel finish panel sub-assemblies from manual and automatic air conditioning systems followed by front door scuff plate RH and cowl side trim sub-assembly RH. You must remove the No. 2 instrument panel under cover sub-assembly with the lower instrument panel sub-assembly and the upper console panel sub-assembly. The necessary equipment for vehicles without rear air conditioning includes removal of the No. 2 console box duct as well as the lower rear console box and the console box assembly. You must take out the console box assembly which corresponds to the rear air conditioning system. First remove the front No. 1 and No. 2 console box inserts before taking out the engine switch when your vehicle has a Smart Key System. Detach the front door opening trim Weather Strip on the LH side followed by removal of the front pillar garnish on the LH side before performing the same steps on the RH side. Few maintenance tasks exist in this process. Remove the No. 1 instrument panel speaker panel sub-assembly as well as the front No. 2 speaker assembly for the LH side and the No. 2 instrument panel speaker panel sub-assembly. For speaker assembly procedures follow the same process for the RH side speaker allocation. You must disconnect the instrument panel wire assembly during the instrument panel safety pad assembly removal. The service procedure includes discarding the No. 1 heater to register duct and the No. 4 heater to register duct and the side No. 1 and No. 2 defroster nozzle ducts and the defroster nozzle assembly. Remove the center heater to register sub duct then disconnect the navigation antenna assembly by first uninstalling the 2 screws followed by separating the components before drawing out the 3 clamps.

Question 2

How to install the navigation antenna assembly and related components on Toyota Highlander?

Accepted Answer

The navigation antenna assembly requires two screws for securing before clamping it three times. Begin by installing the center heater to register sub duct before moving to the sequence of installing the defroster nozzle assembly and side No. 2 defroster nozzle duct along with side No. 1 defroster nozzle duct. Set up No. 4 heater to register duct and after that position No. 1 heater to register duct. After that install the instrument panel safety pad assembly while connecting the instrument panel wire assembly. The installation of front No. 2 speaker assemblies begins by securing the LH side unit and progresses through installing the No. 1 instrument panel speaker panel sub-assembly and ending with attaching both speaker assemblies on the RH side using the same procedure established for the LH side. Install the No. 2 instrument panel speaker panel sub-assembly then proceed to install the front pillar garnish LH while connecting the front door opening trim Weather Strip LH. The installation of front pillar garnish RH demands the same methods as for the front door opening trim Weather Strip RH. The manufacturer suggested order is to install the engine switch (w/ Smart Key System) followed by front No. 2 console box insert and front No. 1 console box insert. The installation order includes the console box assembly (w/o Rear Air Conditioning System) and the console box assembly (w/ Rear Air Conditioning System), then the lower rear console box and No. 2 console box duct (w/o Rear Air Conditioning System). The installation process requires upper console panel sub-assembly followed by lower instrument panel sub-assembly and No. 2 instrument panel under cover sub-assembly. The technician should begin installation by placing the lower instrument panel finish panel sub-assembly for Manual and Automatic Air Conditioning Systems followed by the cowl side trim sub-assembly LH with front door scuff plate LH and the cowl side trim sub-assembly RH with front door scuff plate RH. The installation includes mounting the navigation receiver assembly with bracket together with heater control assembly and accessory assembly for Manual Air Conditioning System while using the air conditioning control assembly for Automatic Air Conditioning System. The installer should position and connect the center instrument cluster finish panel assembly for both w/o and w/ Smart Key System together with the center instrument panel register assembly the combination meter assembly and instrument cluster finish panel assembly. Put both front wheels directly ahead before installing the turn signal switch assembly with spiral cable sub-assembly under the covering of the steering column. Perform adjustment of the spiral cable sub-assembly before the installation of the steering wheel assembly followed by a steering wheel center point examination. Mount the steering pad together with lower No. 2 steering wheel cover and lower No. 3 steering wheel cover. The last task involves connecting the cable to the negative battery terminal and observing the steering pad while the SRS warning light. Note that some systems require initialization before reconnecting.

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