AutoCodes – Generic – B2580:04

B2580:04 Code - Headlamp High Beam Control Circuit Open

Quick Answer

The high beam and flash-to-pass functions are contained within the turn signal/multifunction switch. Common causes include Faulty Headlamp High Beam Relay, Headlamp High Beam Relay harness is open or shorted, Headlamp High Beam Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2580:04 indicates Headlamp High Beam Control Circuit Open.
Common causes: Common causes include Faulty Headlamp High Beam Relay, Headlamp High Beam Relay harness is open or shorted, Headlamp High Beam Relay circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 498

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 26, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2580:04 Description

The high beam and flash-to-pass functions are contained within the turn signal/multifunction switch. The Body Control Module (BCM) provides the turn signal/multifunction switch with two signal circuits, the high beam signal circuit, and the flash-to-pass signal circuit. When the low beam headlamps are ON and the turn signal/multifunction switch is placed in the high beam position, ground is applied to the BCM through the high beam signal circuit. The BCM responds to the high beam request by applying ground to the high beam relay control circuit which energizes the high beam relay. With the high beam relay energized, the switch contacts close allowing battery voltage to flow through the high beam fuse to the high beam control circuits illuminating the high beam headlamps. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a short to ground or an open/high resistance in the headlamp high beam relay control circuit.

OBDII Code B2580:04 - Headlamp High Beam Control Circuit Open - AutoCodes.com — B2580:04 Code - Headlamp High Beam Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC B2580:04?

Faulty Headlamp High Beam Relay
Headlamp High Beam Relay harness is open or shorted
Headlamp High Beam Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2580:04?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

B2580:01 High Beam Control Circuit Short to Battery
B2580:02 High Beam Control Circuit Short to Ground
B2580:04 High Beam Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2580:04 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B2580:04 code?

Need more information on how to fix the B2580:04 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2580:04 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.