Parts for your 2006 Toyota Kluger-Tx valve

2006 Toyota Kluger TX valve: what it does, and when to service or replace it

According to Toyota’s technical literature for the XU30 Kluger (Heating/Air Conditioning section of the Toyota Repair Manual) and Toyota’s Electronic Parts Catalogue listing for PNC 88515 “Cooler Expansion Valve (Sub‑Assy)”, the 2006 Toyota Kluger uses a thermostatic expansion valve (TX valve) on the front evaporator. DENSO, the OE supplier for the Kluger’s air‑con system, also catalogues a TXV for this model, and seven‑seat variants with rear air are fitted with a second TXV at the rear evaporator.

On this Kluger, the TX valve meters how much liquid R134a enters the evaporator, reacting to outlet temperature via a sensing bulb. By balancing evaporator superheat, it prevents freeze‑up, keeps pressures in check, and helps deliver stable, frosty vent temps without overworking the compressor. When the TXV sticks or goes out of calibration, cooling can swing from weak to icy then back again, and pressures go odd — not ideal on a summer run up the coast.

The TXV isn’t a routine “service item”, but it’s smart to assess it any time the system is opened, the compressor fails, or you’re chasing inconsistent cabin temps. If the Kluger has rear air, both TXVs should be checked, because a restriction at either end can throw the whole system out.

• Typical TXV issues: slow or uneven cooling, frost on the evaporator/lines, rapid compressor cycling, high high‑side with starved low‑side pressures, hissing at the case.
• Best‑practice replacement: recover refrigerant, remove the glovebox/evaporator case to access the front TXV, replace all O‑rings with the correct HNBR spec, torque fasteners to the repair‑manual spec, evacuate, and recharge to the under‑bonnet label. Replace the receiver/drier (integrated in the condenser on this generation) whenever the system’s opened.

Because handling refrigerant in AU/NZ requires the right ticket, the job’s best left to an ARCtick‑licensed workshop or a technician operating under NZ’s refrigerant handling rules. A good shop will also flush lines if there’s compressor debris, verify the operation of the evaporator temperature sensor, and confirm charge weight for front‑only versus dual (rear) air systems. Done properly, a fresh TXV restores crisp, even cooling and helps the Kluger’s DENSO compressor live a long, quiet life.

• Does the 2006 Kluger use a TX valve or an orifice tube?
  It uses a thermostatic expansion valve. Toyota’s repair info and EPC list a “Cooler Expansion Valve (Sub‑Assy)” for the front evaporator, and dual‑air models also have a rear TXV. There’s no fixed orifice tube in this system.
• Where is the TX valve on a 2006 Kluger?
  The front TXV is mounted at the evaporator inlet/outlet within the HVAC case behind the glovebox, with lines passing through the firewall. On seven‑seat models with rear air, the rear TXV sits near the rear evaporator assembly in the rear quarter.
• Should the TX valve be replaced when fitting a new compressor?
  It’s highly recommended to inspect or replace the TXV, especially if the old compressor failed internally. Any restriction or debris can damage the new compressor. Always replace O‑rings and the receiver/drier, evacuate, and recharge to spec.