AutoCodes – Chevrolet – B3659 Chevrolet

B3659 Chevrolet Code - Head-Up Display Dimming Down Switch Circuit

Quick Answer

The Head-Up Display (HUD) monitors the HUD dimming down switch signal circuit in order to perform the switch functions. Common causes include Faulty Head-Up Display Dimming Down Switch, Head-Up Display Dimming Down Switch harness is open or shorted, Head-Up Display Dimming Down Switch 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: B3659 Chevrolet indicates Head-Up Display Dimming Down Switch Circuit.
Common causes: Common causes include Faulty Head-Up Display Dimming Down Switch, Head-Up Display Dimming Down Switch harness is open or shorted, Head-Up Display Dimming Down Switch 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.

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Code Popularity 481

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 Mar 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3659 Chevrolet Description

The Head-Up Display (HUD) monitors the HUD dimming down switch signal circuit in order to perform the switch functions. When the HUD dimming down switch is depressed and the ignition is in the RUN position, the dimming down switch signal to the HUD is low. When the HUD detects that the HUD dimming down switch signal is low for greater than 60 seconds, the Diagnostic Trouble Code (DTC) B3659 sets.

OBDII Code B3659 Chevrolet - Head-Up Display Dimming Down Switch Circuit - AutoCodes.com — B3659 Chevrolet Code - Head-Up Display Dimming Down Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B3659 Chevrolet?

Faulty Head-Up Display Dimming Down Switch
Head-Up Display Dimming Down Switch harness is open or shorted
Head-Up Display Dimming Down Switch circuit poor electrical connection

How to Fix the DTC B3659 Chevrolet?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3659 Chevrolet 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.

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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.

Frequently Asked Questions about B3659 Chevrolet Code

1. What are the common symptoms of OBDII code B3659 in a Chevrolet related to the Head-Up Display Dimming Down Switch Circuit?

- Common symptoms include the head-up display not dimming down properly or not responding to adjustments.

2. What could cause OBDII code B3659 to trigger in a Chevrolet?

- This code is typically triggered by a malfunction in the head-up display dimming down switch circuit, which could be due to a faulty switch or wiring issue.

3. How can I diagnose the cause of OBDII code B3659 in my Chevrolet?

- To diagnose the issue, you can start by checking the dimming down switch for proper operation and inspecting the wiring for any damage or connectivity issues.

4. Is it safe to continue driving with OBDII code B3659 in a Chevrolet?

- While the vehicle may still be operable with this code, it is recommended to address the issue promptly to ensure proper functionality of the head-up display and to prevent any potential safety hazards.

5. Can I repair OBDII code B3659 in my Chevrolet on my own?

- Depending on your level of automotive knowledge, you may be able to repair this issue on your own by replacing the dimming down switch or repairing any damaged wiring. However, professional help may be needed for more complex repairs.

6. Are there any troubleshooting tips for resolving OBDII code B3659 in a Chevrolet?

- You can start by checking the fuse related to the head-up display system, ensuring proper power supply to the switch, and inspecting for any loose connections.

7. How much does it typically cost to repair OBDII code B3659 in a Chevrolet?

- The cost of repair can vary depending on the extent of the issue and whether you choose to DIY or seek professional help. Costs may include parts and labor charges.

8. Can a faulty head-up display dimming down switch cause OBDII code B3659 in a Chevrolet?

- Yes, a faulty switch can cause this OBDII code to trigger as it indicates a problem with the circuit responsible for dimming down the head-up display.

9. Will resetting the OBDII system clear code B3659 in a Chevrolet?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the head-up display dimming down switch circuit is not addressed, the code is likely to reappear.

10. Is it necessary to replace the entire head-up display unit to resolve OBDII code B3659 in a Chevrolet?

- In most cases, replacing the entire head-up display unit is not necessary to resolve this code. Typically, focusing on the dimming down switch and related circuitry can rectify the issue.