High Priority 100% confidence

No airflow from specific vents or clicking noise behind dashboard

Q: What are the symptoms of No airflow from specific vents or clicking noise behind dashboard in Hyundai Accent?

No cold air from vents. Different temperature on both sides of the cabin. Weak or no heating in winter. No blowing from vents

Q: How to fix No airflow from specific vents or clicking noise behind dashboard in Hyundai Accent?

Replacing the thermistor with 97614-S1000 according to TSB 21-HA-001H. Key protocol: To remove this sensor from the can, you must disable the Auto Defogging System (ADS). With the ignition on, hold the window air button for 3 seconds until the icon flashes 3 times. This sets the flaps loose so as not to break anything.

in Hyundai Accent (2020-2020)

Symptoms

No cold air from vents
Different temperature on both sides of the cabin
Weak or no heating in winter
No blowing from vents

DTC error codes

Brak

Verifying license...

Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

(MC)

Refrigerant: R134a Amount (g): 500g Oil: PAG PAO 68 b.d. Oil (ml): b.d.ml

(LC)

Refrigerant: R134a Amount (g): 550g Oil: PAG FD46XG PAO 68 lub PAG ISO 46 Oil (ml): 180ml

Standard

Refrigerant: R134a Amount (g): 575 – 625g Oil: PAG FD46XG PAO 68 lub PAG ISO 46 Oil (ml): 140 – 160ml

See full specification

Have this problem?

Generate a personalized AI report for your Hyundai Accent or book a workshop visit.

Generate AI report Schedule visit