B0135 Lexus Code - Short Left Seat Belt Pretensioner Squib Circuit
Quick Answer
The B0135 code for Lexus vehicles indicates a problem with the Short Left Seat Belt Pretensioner Squib Circuit. Common causes include Faulty seat belt pretensioner squib on the left side, Short circuit in the wiring harness connected to the left seat belt pretensioner, Loose or corroded electrical connections in the squib circuit. 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
- B0135 Lexus indicates Short Left Seat Belt Pretensioner Squib Circuit.
- Common causes
- Common causes include Faulty seat belt pretensioner squib on the left side, Short circuit in the wiring harness connected to the left seat belt pretensioner, Loose or corroded electrical connections in the squib circuit.
- 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 B0135 Lexus Description
The B0135 code for Lexus vehicles indicates a problem with the Short Left Seat Belt Pretensioner Squib Circuit. The seat belt pretensioner is a safety feature that tightens the seat belt in the event of a collision, reducing the risk of injury to the occupants. The squib circuit is responsible for deploying the pretensioner in response to a crash. When this circuit is shorted on the left side, it means that there is an issue with the electrical connection or component that controls the deployment of the left seat belt pretensioner.
Common Causes of B0135 Lexus
- Faulty seat belt pretensioner squib on the left side.
- Short circuit in the wiring harness connected to the left seat belt pretensioner.
- Loose or corroded electrical connections in the squib circuit.
- Damage to the left seat belt pretensioner due to wear and tear.
- Issues with the vehicle's airbag control module affecting the seat belt pretensioner system.
Symptoms of B0135 Lexus
- Illumination of the airbag warning light on the dashboard.
- Inability to tighten the left seat belt during sudden stops or impacts.
- Failure of the left seat belt pretensioner to deploy in a crash.
- Diagnostic trouble code (DTC) B0135 stored in the vehicle's computer system.
How to Fix B0135 Lexus
- Begin by diagnosing the specific cause of the B0135 code using a diagnostic scanner to pinpoint the exact issue.
- Inspect the wiring harness and electrical connections related to the left seat belt pretensioner for any signs of damage, corrosion, or loose connections.
- Test the left seat belt pretensioner squib to determine if it is functioning correctly or needs replacement.
- Replace any faulty components, such as the seat belt pretensioner squib or damaged wiring, to resolve the issue.
- Clear the diagnostic trouble codes from the vehicle's computer system and perform a test drive to ensure that the problem has been successfully addressed.
Cost to Fix B0135 Lexus
The typical repair costs for addressing the B0135 code on a Lexus vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty seat belt pretensioner squib or repairing damaged wiring harnesses can range from $200 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing. For a more accurate estimate, it's recommended to consult with a local auto repair shop.
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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 B0135 Lexus Code
1. What are the common symptoms of OBDII code B0135 in a Lexus related to the Short Left Seat Belt Pretensioner Squib Circuit?
- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the left side seat belt pretensioner.
2. What are the possible causes of the Short Left Seat Belt Pretensioner Squib Circuit OBDII code B0135 in a Lexus?
- Causes may include damaged wiring, a faulty seat belt pretensioner, a blown fuse, or a malfunctioning control module.
3. How can I diagnose the Short Left Seat Belt Pretensioner Squib Circuit issue in my Lexus triggering OBDII code B0135?
- Diagnosing this issue typically involves using an OBDII scanner to retrieve the specific B0135 code and then inspecting the seat belt pretensioner wiring and connections for any visible damage.
4. Is it safe to drive my Lexus with the Short Left Seat Belt Pretensioner Squib Circuit issue triggering OBDII code B0135?
- It is not recommended to drive the vehicle with this issue, as it may compromise the effectiveness of the left side seat belt pretensioner in the event of a collision.
5. How can I repair the Short Left Seat Belt Pretensioner Squib Circuit problem causing OBDII code B0135 in my Lexus?
- Repairing this issue typically involves repairing or replacing damaged wiring, fixing faulty connections, replacing the seat belt pretensioner if necessary, and resetting the airbag system.
6. Can I reset the OBDII code B0135 related to the Short Left Seat Belt Pretensioner Squib Circuit in my Lexus without fixing the underlying issue?
- While you can clear the code using an OBDII scanner, it is crucial to address the root cause of the problem to ensure the safety and functionality of the seat belt pretensioner system.
7. How much does it cost to repair the Short Left Seat Belt Pretensioner Squib Circuit issue causing OBDII code B0135 in a Lexus?
- Repair costs can vary depending on the extent of the damage, parts needed for replacement, and labor charges. It is advisable to consult a professional mechanic for an accurate estimate.
8. Are there any preventive maintenance tips to avoid triggering the Short Left Seat Belt Pretensioner Squib Circuit OBDII code B0135 in my Lexus?
- Regularly inspecting the seat belt pretensioner wiring, avoiding rough handling of the seat belt, and ensuring proper maintenance of the airbag system can help prevent this issue.
9. Can I fix the Short Left Seat Belt Pretensioner Squib Circuit problem causing OBDII code B0135 in my Lexus myself, or should I seek professional help?
- While some DIY enthusiasts may attempt to diagnose and repair this issue, it is recommended to consult a qualified mechanic or technician for proper diagnosis and repair to ensure safety and effectiveness.
10. Will the Short Left Seat Belt Pretensioner Squib Circuit issue triggering OBDII code B0135 affect the overall safety of my Lexus during driving?
- Yes, this issue can impact the proper function of the left side seat belt pretensioner, which plays a crucial role in restraining occupants during a collision, hence compromising overall safety.
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