B1637 2016 Toyota RAV4 Code - Lost Communication With Rear Airbag Sensor Left
Quick Answer
The B1637 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates that there is a communication issue with the rear airbag sensor located on the left side of the vehicle. Common causes include Damaged wiring or connectors leading to the rear airbag sensor, A faulty rear airbag sensor on the left side of the vehicle, Malfunctioning Engine Control Module (ECM). 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
- B1637 2016 Toyota RAV4 indicates Lost Communication With Rear Airbag Sensor Left.
- Common causes
- Common causes include Damaged wiring or connectors leading to the rear airbag sensor, A faulty rear airbag sensor on the left side of the vehicle, Malfunctioning Engine Control Module (ECM).
- 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 B1637 2016 Toyota RAV4 Description
The B1637 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates that there is a communication issue with the rear airbag sensor located on the left side of the vehicle. This sensor is responsible for detecting impacts or collisions that may trigger the deployment of the airbag in the event of an accident. When communication is lost with this sensor, it can compromise the overall safety system of the vehicle.
Common Causes of B1637 2016 Toyota RAV4
- Damaged wiring or connectors leading to the rear airbag sensor.
- A faulty rear airbag sensor on the left side of the vehicle.
- Malfunctioning Engine Control Module (ECM).
- Corrosion or moisture intrusion affecting the sensor's communication.
- Impact or collision that physically damages the sensor or wiring.
Symptoms of B1637 2016 Toyota RAV4
- Illumination of the airbag warning light on the dashboard.
- Inability to deploy the left-side airbag in the event of a collision.
- Loss of communication with the rear airbag sensor during diagnostic scans.
- Potential failure to pass state vehicle safety inspections.
How to Fix B1637 2016 Toyota RAV4
- Begin by conducting a visual inspection of the wiring and connectors leading to the rear airbag sensor. Look for any signs of damage, corrosion, or loose connections.
- Test the rear airbag sensor using a multimeter to check for proper functionality. Replace the sensor if it fails the test.
- Inspect the Engine Control Module (ECM) for any signs of damage or malfunction. Reset or reprogram the ECM if necessary.
- Clear the diagnostic trouble codes from the vehicle's system using a diagnostic scanner.
- Conduct a road test to ensure that the airbag warning light does not reappear and that communication with the rear airbag sensor is restored.
Cost to Fix B1637 2016 Toyota RAV4
The typical repair costs for addressing the B1637 code on a 2016 Toyota RAV4 can vary depending on the specific cause of the issue. In general, the cost of replacing a rear airbag sensor can range from $200 to $500, including parts and labor. If the issue is related to wiring or the ECM, additional diagnostic and repair costs may apply.
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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.
Frequently Asked Questions about B1637 2016 Toyota RAV4 Code
1. What are the common symptoms of OBDII code B1637 in a 2016 Toyota RAV4?
The common symptoms of OBDII code B1637 "Lost Communication With Rear Airbag Sensor Left" in a 2016 Toyota RAV4 may include the airbag warning light illuminating on the dashboard.
2. What could cause the OBDII code B1637 to appear in a 2016 Toyota RAV4?
The OBDII code B1637 in a 2016 Toyota RAV4 is typically triggered by a communication issue between the vehicle's onboard diagnostic system and the rear airbag sensor on the left side.
3. How serious is the OBDII code B1637 in a 2016 Toyota RAV4?
The OBDII code B1637 "Lost Communication With Rear Airbag Sensor Left" in a 2016 Toyota RAV4 should be addressed promptly as it relates to the communication with a critical safety system like the airbag sensor.
4. What are some DIY repair tips for addressing OBDII code B1637 in a 2016 Toyota RAV4?
DIY repair tips for OBDII code B1637 in a 2016 Toyota RAV4 may include checking the wiring connections to the rear airbag sensor, ensuring they are secure and free of damage or corrosion.
5. Can driving with the OBDII code B1637 present in a 2016 Toyota RAV4 be dangerous?
Driving with the OBDII code B1637 indicating a communication issue with the rear airbag sensor in a 2016 Toyota RAV4 could potentially compromise the proper functioning of the airbag system in the event of a collision.
6. Is it safe to reset the OBDII code B1637 in a 2016 Toyota RAV4 without addressing the underlying issue?
Resetting the OBDII code B1637 in a 2016 Toyota RAV4 without addressing the underlying communication problem with the rear airbag sensor may temporarily turn off the warning light but will not solve the issue and could pose a safety risk.
7. How can a professional mechanic diagnose OBDII code B1637 in a 2016 Toyota RAV4?
A professional mechanic can diagnose OBDII code B1637 in a 2016 Toyota RAV4 using specialized diagnostic equipment to check the communication signals between the onboard system and the rear airbag sensor.
8. Are there any recalls or service bulletins related to OBDII code B1637 in a 2016 Toyota RAV4?
It's recommended to check with Toyota dealerships or online resources for any recalls or service bulletins related to OBDII code B1637 "Lost Communication With Rear Airbag Sensor Left" in a 2016 Toyota RAV4.
9. How much does it typically cost to repair OBDII code B1637 in a 2016 Toyota RAV4?
The cost of repairing OBDII code B1637 in a 2016 Toyota RAV4 can vary depending on the exact cause of the communication issue, but it may involve inspecting and repairing wiring connections or replacing the rear airbag sensor.
10. Can the OBDII code B1637 in a 2016 Toyota RAV4 be a false alarm?
While it's possible for OBDII codes to be triggered by intermittent issues, it's important not to ignore code B1637 "Lost Communication With Rear Airbag Sensor Left" in a 2016 Toyota RAV4 without proper diagnosis and resolution to ensure the safety systems function correctly.
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