LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (Heating / Air Conditioning System - Diagnostic Codes, Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for Gasoline Model) >> No Heating at All [11/2021 - ] >> Description

No Heating at All [11/2021 - ]: Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Lexus NX 350, 2025 Lexus NX 250, 2024 Lexus NX 350, 2024 Lexus NX 250, and 2023 Lexus NX 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 (Blower control is normal)
  • Outlet air temperature does not increase (Blower control is normal)
  • Engine coolant temperature (low)
  • Air mix damper and link operation (jamming)
  • Warm-up control
  • Blockage in heater radiator unit sub-assembly
  • Heater radiator unit sub-assembly malfunction