AutoCodes – Buick – B3659 Buick

B3659 Buick 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 Buick 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 372
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 10, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code B3659 Buick 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 Buick - Head-Up Display Dimming Down Switch Circuit - AutoCodes.com
B3659 Buick Code - Head-Up Display Dimming Down Switch Circuit

What are the Possible Causes of the DTC B3659 Buick?

  • 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 Buick?

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 Buick 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 B3659 Buick code?

Need more information on how to fix the B3659 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3659 Buick 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.

Frequently Asked Questions about B3659 Buick Code

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

- The common symptoms include the Head-Up Display not dimming properly or not responding to adjustments via the dimming down switch.

2. What are some possible causes of OBDII code B3659 in a Buick?

- Possible causes could include a faulty dimming down switch, wiring issues in the circuit, or a malfunction in the Head-Up Display module.

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

- To diagnose the issue, you can start by checking the dimming down switch for proper functionality, inspecting the wiring for any damage or loose connections, and testing the Head-Up Display module for any faults.

4. Can a DIY enthusiast repair OBDII code B3659 in a Buick related to the Head-Up Display Dimming Down Switch Circuit?

- Depending on your skill level, you may be able to repair this issue yourself by replacing the faulty dimming down switch or fixing any wiring problems. However, if you are not experienced with automotive electrical systems, it's recommended to seek professional help.

5. Are there any specific tools required to troubleshoot OBDII code B3659 in a Buick?

- Basic tools such as a multimeter, electrical tape, and wiring diagrams may be helpful in troubleshooting and repairing the Head-Up Display Dimming Down Switch Circuit issue.

6. Is it safe to continue driving my Buick with OBDII code B3659 unresolved?

- It is generally safe to drive your Buick with this code, as it primarily affects the Head-Up Display dimming functionality and does not pose a significant safety risk. However, it is recommended to address the issue promptly to avoid any inconvenience while driving.

7. How much can I expect to pay for repairs related to OBDII code B3659 in a Buick?

- The cost of repairs for this OBDII code can vary depending on the root cause of the issue and whether you choose to tackle the repairs yourself or seek professional help. It's advisable to get a diagnosis from a mechanic to receive an accurate estimate.

8. Can resetting the OBDII system clear the B3659 code in a Buick?

- 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. It's essential to diagnose and fix the root cause of the problem.

9. Will OBDII code B3659 affect the overall performance of my Buick?

- This specific code is related to the Head-Up Display dimming functionality and is unlikely to impact the overall performance of your Buick's engine or drivability. However, it is still important to address the issue to ensure all vehicle systems are functioning correctly.

10. Is OBDII code B3659 a common issue in Buick vehicles?

- While not extremely common, issues related to the Head-Up Display Dimming Down Switch Circuit, including OBDII code B3659, can occur in Buick vehicles, particularly in models equipped with this feature.

Discuss the causes and fixes for B3659 Buick OBDII Code

Code B3659 Buick comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play