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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Air Conditioning System - Diagnostic Codes (2 Of 2) & Symptom Tests) (Hybrid)) >> AIR CONDITIONING SYSTEM (for HV Model) >> No Warm Air Comes Out [10/2018 - ] >> Description

No Warm Air Comes Out [10/2018 - ]: Description

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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
  • Heater radiator unit sub-assembly malfunction
  • Flow shutting valve (water by-pass hose assembly) malfunction
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