U3523

High Voltage System Interlock Circuit F Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

The malfunction indicator on the dashboard lights up
Power limitation or inability to start the electric motor
Disabling the High Voltage Battery
Warning messages on display
Sound warning signals

Causes

Open circuit in HVIL circuit
Short circuit in wiring
Damaged or oxidized high voltage system connectors
One of the HVIL components is faulty
Problems with high voltage relay or fuse

How to Fix

Diagnose the HVIL circuit using a scanner
Visually check all high-voltage system connectors for damage
Check integrity of HVIL wiring
Test interlock circuit components
Repair only from an authorized dealer

Related codes

U3521 U3522 U3524