B1637 2017 Toyota RAV4 Code - Lost Communication With Rear Airbag Sensor Left
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
- B1637 2017 Toyota RAV4 indicates Lost Communication With Rear Airbag Sensor Left.
- 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.
Code B1637 2017 Toyota RAV4 Description
What are the Possible Causes of the DTC B1637 2017 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 B1637 2017 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1637 2017 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 B1637 2017 Toyota RAV4 code?
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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 2017 Toyota RAV4 Code
1. What are the common symptoms of OBDII code B1637 in a 2017 Toyota RAV4?
- Common symptoms include the airbag warning light illuminating on the dashboard, the airbag system not functioning properly, and potential issues with the rear airbag sensor on the left side of the vehicle.
2. What could cause the OBDII code B1637 "Lost Communication With Rear Airbag Sensor Left" in a 2017 Toyota RAV4?
- Possible causes may include a faulty rear airbag sensor, damaged wiring or connectors, a blown fuse, or issues with the airbag control module.
3. How can I diagnose the OBDII code B1637 in my 2017 Toyota RAV4?
- To diagnose this code, it is recommended to use an OBDII scanner to retrieve the specific fault codes, inspect the rear airbag sensor and its connections for any visible damage, and test the wiring for continuity and proper voltage.
4. Is it safe to drive my 2017 Toyota RAV4 with the B1637 code for "Lost Communication With Rear Airbag Sensor Left"?
- It is not recommended to drive the vehicle with this code active, as the airbag system may not deploy correctly in the event of a collision, potentially compromising passenger safety.
5. Can I reset the B1637 code in my 2017 Toyota RAV4 without fixing the issue?
- While you can clear the code using an OBDII scanner, it is important to address the root cause of the problem to ensure the airbag system functions properly and the code does not reoccur.
6. How much does it typically cost to repair the OBDII code B1637 in a 2017 Toyota RAV4?
- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the rear airbag sensor, repairing damaged wiring, or addressing other related components. It is advisable to consult with a professional technician for an accurate estimate.
7. Are there any DIY tips for fixing the B1637 code in a 2017 Toyota RAV4?
- DIY tips may include checking and cleaning the connectors to the rear airbag sensor, inspecting the wiring for any visible damage, and ensuring all related fuses are intact. However, complex repairs may require professional assistance.
8. Can a malfunctioning rear airbag sensor on the left side affect the overall airbag system in a 2017 Toyota RAV4?
- Yes, a malfunctioning rear airbag sensor can impact the overall airbag system's functionality, potentially leading to issues with airbag deployment and overall safety in the vehicle.
9. How long does it typically take to repair the B1637 code in a 2017 Toyota RAV4?
- The repair time can vary based on the specific diagnosis and required fix. Simple issues like a loose connector may be resolved quickly, while more complex problems could take longer and may require parts ordering.
10. Is the OBDII code B1637 specific to the 2017 Toyota RAV4, or can it occur in other vehicle models?
- While the specific code may vary, similar communication issues with airbag sensors can occur in other vehicle models as well. It is essential to address such issues promptly to ensure the proper functioning of the airbag system.
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