AutoCodes – Lexus – B0136 Lexus

B0136 Lexus Code - Open Left Seat Belt Pretensioner Squib Circuit

Quick Answer

The left seat belt pretensioner squib circuit consists of the air bag center sensor and right seat belt pretensioner. Common causes include Faulty Left Seat Belt Pretensioner, Left Seat Belt Pretensioner harness is open or shorted, Left Seat Belt Pretensioner 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: B0136 Lexus indicates Open Left Seat Belt Pretensioner Squib Circuit.
Common causes: Common causes include Faulty Left Seat Belt Pretensioner, Left Seat Belt Pretensioner harness is open or shorted, Left Seat Belt Pretensioner 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 5,233

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 Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0136 Lexus Description

The left seat belt pretensioner squib circuit consists of the air bag center sensor and right seat belt pretensioner. The squib circuit causes the left seat belt pretensioner to deploy when deployment conditions are satisfied. The Air Bag Control Module monitors the Left Seat Belt Pretensioner. The Air Bag Control Module sets the OBDII code when the Left Seat Belt Pretensioner is not to factory specifications.

OBDII Code B0136 Lexus - Open Left Seat Belt Pretensioner Squib Circuit - AutoCodes.com — B0136 Lexus Code - Open Left Seat Belt Pretensioner Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B0136 Lexus?

Faulty Left Seat Belt Pretensioner
Left Seat Belt Pretensioner harness is open or shorted
Left Seat Belt Pretensioner circuit poor electrical connection
Faulty Air Bag Control Module

How to Fix the DTC B0136 Lexus?

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 B0136 Lexus 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 B0136 Lexus code?

Need more information on how to fix the B0136 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0136 Lexus 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 B0136 Lexus Code

1. What are the common symptoms of OBDII code B0136 in a Lexus related to the open left seat belt pretensioner squib circuit?

The common symptoms include the airbag warning light illuminating on the dashboard and a potential notification message indicating a fault in the left seat belt pretensioner circuit.

2. What are the possible causes of OBDII code B0136 in a Lexus indicating an open left seat belt pretensioner squib circuit?

The code B0136 in a Lexus is typically caused by a faulty left seat belt pretensioner, damaged wiring or connectors in the circuit, or a problem with the airbag control module.

3. How can I diagnose the issue related to OBDII code B0136 in my Lexus with an open left seat belt pretensioner squib circuit?

To diagnose the issue, you can use an OBDII scanner to retrieve the specific fault code, visually inspect the wiring and connectors for any signs of damage, and perform continuity tests on the left seat belt pretensioner circuit.

4. Is it safe to drive my Lexus with OBDII code B0136 indicating an open left seat belt pretensioner squib circuit?

It is not recommended to drive the vehicle with an active airbag fault code like B0136, as it can compromise the effectiveness of the seat belt pretensioner system in case of an accident.

5. Can I reset the OBDII code B0136 in my Lexus related to the open left seat belt pretensioner squib circuit by disconnecting the battery?

While disconnecting the battery may temporarily clear the fault code, it will not fix the underlying issue causing the open left seat belt pretensioner squib circuit fault. It is recommended to diagnose and repair the problem to ensure proper functionality.

6. What are some repair tips for resolving OBDII code B0136 in a Lexus with an open left seat belt pretensioner squib circuit?

Repair tips include checking and repairing any damaged wiring or connectors, replacing the faulty left seat belt pretensioner if necessary, and clearing the fault code with an OBDII scanner after completing the repairs.

7. Do I need special tools or equipment to fix OBDII code B0136 indicating an open left seat belt pretensioner squib circuit in my Lexus?

While basic tools like a multimeter, wiring diagram, and OBDII scanner are helpful for diagnosing and repairing the issue, specialized tools may be required for accessing and replacing the seat belt pretensioner or airbag components.

8. How much does it typically cost to repair OBDII code B0136 in a Lexus related to an open left seat belt pretensioner squib circuit?

The cost of repairing OBDII code B0136 can vary depending on the extent of the damage, parts needed for replacement, labor charges, and dealership or repair shop rates. It is advisable to obtain quotes from different sources for an accurate estimate.

9. Can I fix OBDII code B0136 related to an open left seat belt pretensioner squib circuit in my Lexus myself, or do I need to take it to a professional?

While some DIY enthusiasts may have the skills to diagnose and repair the issue, dealing with airbag systems can be complex and potentially dangerous if not handled properly. It is recommended to seek professional help for safety and proper repair.

10. How long does it take to repair OBDII code B0136 in a Lexus indicating an open left seat belt pretensioner squib circuit?

The repair time can vary depending on the extent of the issue, availability of parts, and the expertise of the technician. It is advisable to consult with the repair shop or technician performing the repair to get an estimate of the time required.