B1653 Lexus Code - Seat Position Airbag Sensor Circuit Malfunction
Quick Answer
The Seat Position Sensor circuit consists of the Center Airbag Sensor Assembly and the Seat Position Sensor. Common causes include Faulty Seat Position Airbag Sensor, Seat Position Airbag Sensor harness is open or shorted, Seat Position Airbag Sensor 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
- B1653 Lexus indicates Seat Position Airbag Sensor Circuit Malfunction.
- Common causes
- Common causes include Faulty Seat Position Airbag Sensor, Seat Position Airbag Sensor harness is open or shorted, Seat Position Airbag Sensor 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 B1653 Lexus Description
What are the Possible Causes of the DTC B1653 Lexus?
- Faulty Seat Position Airbag Sensor
- Seat Position Airbag Sensor harness is open or shorted
- Seat Position Airbag Sensor circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1653 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 B1653 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.
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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 B1653 Lexus Code
1. What are the common symptoms of OBDII code B1653 in a Lexus related to the Seat Position Airbag Sensor Circuit Malfunction?
- Common symptoms include the airbag warning light illuminating on the dashboard, potential loss of functionality of the airbag system, and diagnostic trouble codes related to the seat position sensor circuit.
2. What are the possible causes of the B1653 code in a Lexus indicating a Seat Position Airbag Sensor Circuit Malfunction?
- The code B1653 can be triggered by issues such as a faulty seat position sensor, damaged wiring or connectors in the airbag system, or a malfunctioning airbag control module.
3. How can I diagnose the Seat Position Airbag Sensor Circuit Malfunction in my Lexus when the B1653 code appears?
- Diagnosing the issue typically involves using an OBDII scanner to retrieve the specific trouble code, checking the seat position sensor and related wiring for damage, and testing the airbag system components for proper functioning.
4. Can I continue to drive my Lexus with the B1653 code indicating a Seat Position Airbag Sensor Circuit Malfunction?
- It is not recommended to drive the vehicle with the B1653 code present, as it indicates a potential problem with the airbag system, which is crucial for occupant safety in the event of a collision.
5. How can I repair the Seat Position Airbag Sensor Circuit Malfunction in my Lexus triggered by the B1653 code?
- Repairing the issue may involve replacing the faulty seat position sensor, repairing damaged wiring or connectors, or reprogramming the airbag control module to resolve the circuit malfunction.
6. Are there any safety precautions to consider when working on the Seat Position Airbag Sensor Circuit in a Lexus?
- When working on the airbag system, it is essential to disconnect the vehicle's battery and wait for at least 10 minutes to allow any residual power to dissipate before starting any repair or diagnostic procedures.
7. Can a DIY enthusiast fix the B1653 code related to the Seat Position Airbag Sensor Circuit Malfunction in a Lexus?
- While some basic diagnostics like checking for loose connections can be done by DIY enthusiasts, more complex repairs involving airbag components and sensor replacement are best left to trained professionals due to safety concerns.
8. How much does it typically cost to repair the B1653 code indicating a Seat Position Airbag Sensor Circuit Malfunction in a Lexus?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
9. Will resetting the B1653 code in a Lexus solve the Seat Position Airbag Sensor Circuit Malfunction issue?
- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Seat Position Airbag Sensor Circuit Malfunction. It is essential to diagnose and repair the root cause of the issue.
10. How often does the B1653 code related to the Seat Position Airbag Sensor Circuit Malfunction occur in Lexus vehicles?
- The B1653 code related to the Seat Position Airbag Sensor Circuit Malfunction can occur sporadically in Lexus vehicles, especially in older models or those with high mileage, due to wear and tear on the airbag system components.
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