B1637 2015 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 2015 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 2015 Toyota RAV4 Description
What are the Possible Causes of the DTC B1637 2015 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 2015 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 2015 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 2015 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 2015 Toyota RAV4 Code
1. What are the common symptoms of OBDII code B1637 in a 2015 Toyota RAV4?
The common symptoms include the airbag warning light illuminating on the dashboard and potential loss of communication with the rear airbag sensor on the left side.
2. What does the OBDII code B1637 indicating "Lost Communication With Rear Airbag Sensor Left" mean?
This code suggests that the communication between the vehicle's onboard computer system and the rear airbag sensor on the left side has been interrupted or lost.
3. What are possible causes of OBDII code B1637 in a 2015 Toyota RAV4?
Potential causes of this code include a faulty rear airbag sensor on the left side, damaged wiring or connectors, a blown fuse, or issues with the airbag control module.
4. How can I diagnose the issue related to OBDII code B1637 in my 2015 Toyota RAV4?
To diagnose the problem, it is recommended to perform a thorough inspection of the rear airbag sensor, check the wiring and connectors for any damage, and use an OBDII scanner to retrieve specific error codes and data.
5. Can I continue driving my 2015 Toyota RAV4 with the OBDII code B1637 present?
It is not advisable to drive the vehicle with an active airbag system fault code like B1637, as it may compromise the effectiveness of the airbag system in case of an accident.
6. How can I repair OBDII code B1637 in my 2015 Toyota RAV4?
The repair process typically involves fixing or replacing the faulty rear airbag sensor on the left side, repairing any damaged wiring or connectors, and resetting the error code using an OBDII scanner.
7. Are there any safety risks associated with OBDII code B1637 in a 2015 Toyota RAV4?
Yes, driving with a malfunctioning airbag system due to this error code can pose safety risks in the event of a collision, as the airbags may not deploy properly to protect occupants.
8. Will resetting the OBDII code B1637 in my 2015 Toyota RAV4 solve the issue permanently?
Simply resetting the code may temporarily clear the warning light, but if the underlying problem with the rear airbag sensor or wiring persists, the code is likely to reappear. It is crucial to address the root cause for a permanent solution.
9. Can I fix the OBDII code B1637 issue in my 2015 Toyota RAV4 myself, or should I seek professional help?
While some experienced DIYers may be able to address the issue themselves, dealing with airbag system components requires specialized knowledge and tools. It is recommended to consult a qualified mechanic or technician for proper diagnosis and repair.
10. How much does it typically cost to repair OBDII code B1637 in a 2015 Toyota RAV4?
The cost of repairing this code can vary depending on the specific cause of the issue, the parts needed for replacement, and labor charges. It is advisable to obtain a few quotes from automotive repair shops to compare prices.
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