LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 219 (Heating / Air Conditioning System (Except Hybrid) - Diagnostic Codes & Symptom Tests) >> AIR CONDITIONING SYSTEM (for Gasoline Model) >> No Warm Air Comes Out [06/2018 - 08/2020] >> Description

No Warm Air Comes Out [06/2018 - 08/2020]: Description

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 250, 2023 Lexus ES 350, 2023 Lexus ES 250, and 2022 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

If cool air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause.

Symptom Factor
  • No warm air comes out
    1. (Blower control is normal)
  • Outlet air temperature does not increase
    1. (Blower control is normal)
  • Engine coolant temperature (low)
  • Refrigerant volume (low)
  • No. 1 air conditioning radiator damper servo sub-assembly malfunction
  • Warm-up control
  • Blockage in heater radiator unit sub-assembly
  • Quick heater assembly malfunction*
  • Heater radiator unit sub-assembly malfunction
  1. *: w/ Quick Heater
scientia non olet · About LEMON Manuals