BYD ATTO 3 (e-Platform 3.0) Right Turn Signal Not Working

A right turn signal failure indicates that the vehicle’s right-side direction indicator is not operating when commanded. The fault affects the exterior lighting and turn-signal system, including the lamp assembly, turn-signal control circuits, body control functions, wiring, and associated electronic controls responsible for activating the right indicators. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

Symptoms

• Right turn signal does not illuminate
• Right turn indicator may operate intermittently
• Right-side indicator may flash abnormally
• Turn signal warning may be displayed
• Left turn signal continues operating normally
• Front, rear, or side right indicator may not operate
• Hazard warning lights may be affected
• Lighting-related fault may be stored

Possible Causes

• Failed right turn signal LED or lamp assembly
• Fault in the right turn signal power supply
• Open circuit in the indicator wiring
• Short circuit in the lighting circuit
• Loose or damaged lamp connector
• Poor or corroded connector terminals
• Damaged wiring near the lamp assembly
• Turn-signal switch or control input fault
• Lighting control-module fault
• Body control-module fault
• Low or unstable 12V auxiliary voltage
• Internal lamp electronic failure
• Communication fault affecting lighting control

Diagnosis

Diagnosis should begin by confirming which right-side indicator is affected and checking whether the front, rear, and side indicators respond normally. The relevant lamp power and ground circuits, connectors, wiring continuity, control inputs, and lighting control-module outputs should then be evaluated against manufacturer specifications.

Comparing the affected circuit with the corresponding left-side circuit can help establish whether the problem is isolated to the lamp assembly or originates in the vehicle-side wiring or control system. For New Zealand owners, confirming the electrical fault before replacing a complete LED lighting assembly can help avoid unnecessary repair costs.

Accurately diagnosing this fault often requires manufacturer testing procedures, wiring diagrams, connector pinouts, specifications, and system calibration information. Access to the factory service manual significantly reduces diagnostic time and helps prevent unnecessary parts replacement.

Applicable Years

2022, 2023, 2024, 2025, 2026, onwards

To order the correct OEM Service and Repair Manual for your BYD ATTO 3, submit your request using the form below and our team will provide the ordering details.