Engine-CodesToyota – B1635 2016 Toyota RAV4

B1635 2016 Toyota RAV4 Code - Rear Airbag Sensor Left Circuit Malfunction

Quick Answer

The B1635 code for a 2016 Toyota RAV4 indicates a Rear Airbag Sensor Left Circuit Malfunction. Common causes include Faulty rear airbag sensor left, Damaged wiring or connectors in the airbag sensor circuit, Water damage or corrosion in the sensor. 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
B1635 2016 Toyota RAV4 indicates Rear Airbag Sensor Left Circuit Malfunction.
Common causes
Common causes include Faulty rear airbag sensor left, Damaged wiring or connectors in the airbag sensor circuit, Water damage or corrosion in the sensor.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code B1635 2016 Toyota RAV4 Description

The B1635 code for a 2016 Toyota RAV4 indicates a Rear Airbag Sensor Left Circuit Malfunction. This means that there is an issue with the sensor that monitors the left rear airbag in the vehicle. The airbag system is a crucial safety feature that deploys in the event of a collision to protect occupants from serious injury. A malfunction in this sensor could potentially lead to the airbag not deploying properly in an accident, putting occupants at risk.

OBDII Code B1635 2016 Toyota RAV4 - Rear Airbag Sensor Left Circuit Malfunction
B1635 2016 Toyota RAV4 Code - Rear Airbag Sensor Left Circuit Malfunction

Common Causes of B1635 2016 Toyota RAV4

  1. Faulty rear airbag sensor left
  2. Damaged wiring or connectors in the airbag sensor circuit
  3. Water damage or corrosion in the sensor
  4. Impact or physical damage to the sensor
  5. Electronic control unit (ECU) malfunction

Symptoms of B1635 2016 Toyota RAV4

  1. Airbag warning light on the dashboard
  2. Airbag system fault message displayed on the instrument cluster
  3. Inability to turn off the passenger airbag
  4. Erratic behavior of the airbag system
  5. Vehicle failing airbag system diagnostic tests

How to Fix B1635 2016 Toyota RAV4

  1. Begin by diagnosing the specific cause of the malfunction using a diagnostic scanner to retrieve the trouble codes and pinpoint the issue.
  2. Inspect the wiring and connectors in the rear airbag sensor left circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the rear airbag sensor left for proper functionality. If faulty, replace the sensor with a new one.
  4. Clear the trouble codes from the vehicle's ECU memory and reset the airbag system.
  5. Conduct a comprehensive test drive to ensure that the airbag system is functioning correctly and the warning lights have been reset.

Cost to Fix B1635 2016 Toyota RAV4

The typical repair costs for addressing a Rear Airbag Sensor Left Circuit Malfunction in a 2016 Toyota RAV4 can range from $200 to $500, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary. Rates may be higher at dealerships or in metropolitan areas, while independent shops may charge less. It's recommended to obtain quotes from local repair shops for a more accurate estimate.

Tech Notes for B1635 2016 Toyota RAV4

For some Toyota models, the B1635 is for the Rear Airbag Sensor Left Circuit Malfunction. Please check the Factory Service Manual for more information.

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1635 2016 Toyota RAV4 Code

1. What does OBDII code B1635 mean for my 2016 Toyota RAV4?

This code indicates a Rear Airbag Sensor Left Circuit Malfunction in your vehicle.

2. What are the common symptoms of OBDII code B1635 in a 2016 Toyota RAV4?

Common symptoms may include an illuminated airbag warning light on the dashboard and a potential failure of the rear left airbag system.

3. What are the possible causes of OBDII code B1635 in a 2016 Toyota RAV4?

The code B1635 can be triggered by issues such as damaged wiring, a faulty rear airbag sensor, or a problem with the airbag control module.

4. How can I diagnose the Rear Airbag Sensor Left Circuit Malfunction in my 2016 Toyota RAV4?

Diagnosing the issue may involve checking the wiring connections, inspecting the rear airbag sensor, and using an OBDII scanner to retrieve the specific fault codes.

5. Can I drive my 2016 Toyota RAV4 with OBDII code B1635?

It is not recommended to drive the vehicle with an active airbag system fault as it may compromise the safety features of the car in case of an accident.

6. How can I repair OBDII code B1635 in my 2016 Toyota RAV4?

Repairing the issue may involve repairing or replacing damaged wiring, replacing the rear airbag sensor, or resetting the airbag control module.

7. Is it safe to reset the OBDII code B1635 in my 2016 Toyota RAV4 without fixing the underlying issue?

It is not advisable to simply reset the code without addressing the root cause, as the airbag system may still be compromised and fail to deploy in an emergency.

8. Will OBDII code B1635 cause the airbags to deploy unexpectedly in my 2016 Toyota RAV4?

The code B1635 itself should not cause the airbags to deploy unexpectedly, but it indicates a malfunction in the airbag system that needs to be addressed promptly.

9. How much does it cost to repair OBDII code B1635 in a 2016 Toyota RAV4?

The cost of repairs for code B1635 can vary depending on the extent of the damage and the parts that need to be replaced, so it is recommended to consult a professional for an accurate estimate.

10. Can a DIY enthusiast fix OBDII code B1635 in a 2016 Toyota RAV4?

While some basic troubleshooting steps can be taken by DIY enthusiasts, it is recommended to seek professional help for diagnosing and repairing airbag system issues to ensure safety and proper functionality.

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