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AutoCodes - Generic - B3634

B3634 Code - Head-Up Display Dimming Switch Circuit

- Code Popularity: 401 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B3634?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Head-Up Display Dimming Switch
  • Head-Up Display Dimming Switch harness is open or shorted
  • Head-Up Display Dimming Switch circuit poor electrical connection
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How to Fix the DTC B3634?

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

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3634 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B3634 Description

The Head-Up Display (HUD) monitors the HUD dimming up switch signal circuit in order to perform the switch functions. When the HUD dimming up switch is depressed and the ignition is in the RUN position, the dimming switch signal to the HUD is low. When the HUD detects that the HUD dimming switch signal is low for greater than 60 seconds, the Diagnostic Trouble Code (DTC) B3634 sets.

OBDII Code B3634 - Head-Up Display Dimming Switch Circuit - AutoCodes.com
B3634 Code - Head-Up Display Dimming Switch Circuit

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Code B3634 comments

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