AutoCodes – Toyota – B1635 2018 Toyota RAV4

B1635 2018 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 2018 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.

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Code Popularity 345

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 Oct 10, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1635 2018 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 2018 Toyota RAV4 - Rear Airbag Sensor Left Circuit Malfunction - AutoCodes.com — B1635 2018 Toyota RAV4 Code - Rear Airbag Sensor Left Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1635 2018 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 2018 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.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1635 2018 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 2018 Toyota RAV4 code?

Need more information on how to fix the B1635 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1635 2018 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 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1635 on a 2018 Toyota RAV4?

The common symptoms of OBDII code B1635 on a 2018 Toyota RAV4 include the airbag warning light staying on, potential issues with the rear airbag system, and possible loss of functionality in the left rear airbag sensor.

2. What could cause the Rear Airbag Sensor Left Circuit Malfunction code B1635 on a 2018 Toyota RAV4?

The code B1635 on a 2018 Toyota RAV4 is typically caused by a faulty rear airbag sensor, damaged wiring or connectors in the left circuit, or issues with the airbag control module.

3. How can I diagnose the Rear Airbag Sensor Left Circuit Malfunction on my 2018 Toyota RAV4?

Diagnosing OBDII code B1635 on a 2018 Toyota RAV4 involves using a diagnostic scanner to read the fault codes, inspecting the rear airbag sensor and its wiring for any visible damage, and testing the sensor's electrical connections.

4. Can I still drive my 2018 Toyota RAV4 with the Rear Airbag Sensor Left Circuit Malfunction code B1635?

It is not recommended to drive your 2018 Toyota RAV4 with the B1635 code, as it indicates a malfunction in the left rear airbag sensor circuit, which could compromise the safety of the airbag system in the event of a crash.

5. How can I repair the Rear Airbag Sensor Left Circuit Malfunction on my 2018 Toyota RAV4?

To repair the B1635 code on a 2018 Toyota RAV4, you may need to replace the faulty rear airbag sensor, repair any damaged wiring or connectors in the left circuit, or reset the airbag control module after fixing the issue.

6. Is the Rear Airbag Sensor Left Circuit Malfunction a common problem in 2018 Toyota RAV4 vehicles?

While the B1635 code may not be extremely common in 2018 Toyota RAV4 vehicles, issues with airbag sensors and circuits can occur due to various factors like wear and tear, accidents, or electrical faults.

7. Can I reset the OBDII code B1635 on my 2018 Toyota RAV4 without fixing the underlying issue?

Resetting the B1635 code without addressing the underlying issue, such as a malfunctioning rear airbag sensor or damaged wiring, may temporarily clear the code but will not resolve the root cause of the problem.

8. Will fixing the Rear Airbag Sensor Left Circuit Malfunction on my 2018 Toyota RAV4 be costly?

The cost of fixing the B1635 code on a 2018 Toyota RAV4 can vary depending on the specific issue causing the malfunction, the parts needed for repair, and whether you choose to do the repair yourself or take it to a professional mechanic.

9. How long does it typically take to repair the Rear Airbag Sensor Left Circuit Malfunction on a 2018 Toyota RAV4?

The time required to repair the B1635 code on a 2018 Toyota RAV4 can vary based on the extent of the issue, availability of parts, and your level of experience with automotive repairs. It may take a few hours to a full day for diagnosis and repair.

10. Can a DIY enthusiast fix the Rear Airbag Sensor Left Circuit Malfunction on a 2018 Toyota RAV4?

While some DIY enthusiasts may have the skills and tools to fix the B1635 code on a 2018 Toyota RAV4, working on airbag systems can be complex and potentially dangerous. It is recommended to consult a professional if you are unsure about handling airbag-related repairs.