AutoCodesToyota – B1635 2013 Toyota RAV4

B1635 2013 Toyota RAV4 Code - Rear Airbag Sensor Left Circuit Malfunction

Quick Answer

The Side Airbag Sensor Left (LH) or Rear Airbag Sensor Right (RH) consists of the Diagnostic Circuit, the Lateral Deceleration Sensor, etc. Common causes include Faulty Rear Airbag Sensor Left (LH), Rear Airbag Sensor Left harness is open or shorted, Rear Airbag Sensor Left 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
B1635 2013 Toyota RAV4 indicates Rear Airbag Sensor Left Circuit Malfunction.
Common causes
Common causes include Faulty Rear Airbag Sensor Left (LH), Rear Airbag Sensor Left harness is open or shorted, Rear Airbag Sensor Left 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 282
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 10, 2022
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Code B1635 2013 Toyota RAV4 Description

The Side Airbag Sensor Left (LH) or Rear Airbag Sensor Right (RH) consists of the Diagnostic Circuit, the Lateral Deceleration Sensor, etc. If the Center Airbag Sensor receives signals from the Lateral Deceleration Sensor, it determines whether the Supplemental Restraint System (SRS) should be activated. The Diagnostic Trouble Code (DTC) B1635 is stored when a malfunction is detected in the Rear Airbag Sensor Left circuit.
OBDII Code B1635 2013 Toyota RAV4 - Rear Airbag Sensor Left Circuit Malfunction - AutoCodes.com
B1635 2013 Toyota RAV4 Code - Rear Airbag Sensor Left Circuit Malfunction

What are the Possible Causes of the DTC B1635 2013 Toyota RAV4?

  • Faulty Rear Airbag Sensor Left (LH)
  • Rear Airbag Sensor Left harness is open or shorted
  • Rear Airbag Sensor Left circuit poor electrical connection
  • Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1635 2013 Toyota RAV4?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1635 2013 Toyota RAV4 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 B1635 2013 Toyota RAV4 code?

Need more information on how to fix the B1635 2013 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1635 2013 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 2013 Toyota RAV4 Code

1. What does the OBDII code B1635 mean on a 2013 Toyota RAV4?

The code B1635 indicates a "Rear Airbag Sensor Left Circuit Malfunction," meaning there is an issue with the wiring, connector, or sensor for the left rear airbag system.

2. What are the common symptoms of the B1635 code?

Symptoms include the airbag warning light staying illuminated, potential failure of the left rear airbag to deploy in a crash, and no other noticeable driving issues.

3. What causes the B1635 code to appear?

Common causes include damaged wiring or connectors, a faulty rear airbag sensor, corrosion in the circuit, or issues with the airbag control module.

4. Can I still drive my 2013 Toyota RAV4 with the B1635 code active?

While the vehicle is drivable, the airbag system may not function properly, increasing the risk of injury during an accident. It’s important to address the issue promptly.

5. How do I diagnose the B1635 code?

Diagnosis typically involves using an OBDII scanner to confirm the code, visually inspecting the wiring and connectors for damage, and testing the rear airbag sensor with a multimeter.

6. Can the B1635 code trigger accidentally?

Yes, the code can be triggered by loose or disconnected wiring, improper repairs, or even water intrusion in the rear sensor area.

7. How is the B1635 code repaired?

Repairs may involve replacing or repairing damaged wiring, cleaning corroded connectors, or replacing the faulty rear airbag sensor.

8. How much does it cost to fix the B1635 code on a 2013 Toyota RAV4?

Depending on the issue, repairs can range from $100 to $500, with costs increasing if the airbag sensor or control module needs replacement.

9. Can I clear the B1635 code without fixing it?

Clearing the code without fixing the underlying issue will only temporarily turn off the airbag warning light; the code will return if the problem persists.

10. Should I take my car to a professional for the B1635 code?

Yes, dealing with airbag systems is complex and safety-critical. It’s recommended to have a professional diagnose and repair the issue to ensure proper airbag functionality.

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