AutoCodes – Toyota – C1A11 2013 Toyota RAV4

C1A11 2013 Toyota RAV4 Code - Front Radar Sensor Incorrect Axial Gap

Quick Answer

For vehicles with Dynamic Radar Cruise Control System: The Driving Support ECU Assembly uses the Millimeter Wave Radar Sensor Assembly to detect objects in front of the vehicle. Common causes include Faulty Millimeter Wave Radar Sensor Assembly, Millimeter Wave Radar Sensor Assembly harness is open or shorted, Millimeter Wave Radar Sensor Assembly 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: C1A11 2013 Toyota RAV4 indicates Front Radar Sensor Incorrect Axial Gap.
Common causes: Common causes include Faulty Millimeter Wave Radar Sensor Assembly, Millimeter Wave Radar Sensor Assembly harness is open or shorted, Millimeter Wave Radar Sensor Assembly 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 229

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 Feb 28, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1A11 2013 Toyota RAV4 Description

For vehicles with Dynamic Radar Cruise Control System: The Driving Support ECU Assembly uses the Millimeter Wave Radar Sensor Assembly to detect objects in front of the vehicle. When it is determined that the vehicle is being driven in a straight line or on a gradual curve based on signals from the yaw rate and acceleration sensor, the Millimeter Wave Radar Sensor Assembly performs self-diagnosis to check if the sensor beam axis has deviated. When the Millimeter Wave Radar Sensor Assembly beam axis is misaligned, the Driving Support ECU Assembly stores Diagnostic Trouble Code (DTC) C1A11. After installing a new Millimeter Wave Radar Sensor Assembly, if sensor beam axis adjustment is not performed, DTC C1A14 is stored.

For vehicles with Forward Recognition Camera System: The Forward Recognition Camera uses the Millimeter Wave Radar Sensor Assembly to detect obstacles in front of the vehicle. When the vehicle is determined to be driving in a straight line or on a gradual curve based on signals from the yaw rate sensor etc., the Millimeter Wave Radar Sensor Assembly performs self-diagnosis to check if the sensor beam axis has deviated from the vehicle movement direction. When the Millimeter Wave Radar Sensor Assembly beam axis has deviated, the Forward Recognition Camera detects this, and stores DTC C1A11. After installing a new Millimeter Wave Radar Sensor Assembly, if sensor beam axis adjustment is not performed, DTC C1A14 is stored.

For vehicles with Lane Departure Alert System (W/ Steering Control): The Forward Recognition Camera uses the Millimeter Wave Radar Sensor Assembly to detect obstacles in front of the vehicle. When the vehicle is determined to be driving in a straight line or on a gradual curve based on signals from the yaw rate sensor etc., the Millimeter Wave Radar Sensor Assembly performs self-diagnosis to check if the sensor beam axis has deviated from the vehicle movement direction. When the Millimeter Wave Radar Sensor Assembly beam axis has deviated, the Forward Recognition Camera detects this, and stores DTC C1A11.
After installing a new Millimeter Wave Radar Sensor Assembly, if sensor beam axis adjustment is not performed, DTC C1A14 is stored.

For vehicles with Pre-collision System: The Driving Support ECU Assembly uses the Millimeter Wave Radar Sensor Assembly to detect obstacles in front of the vehicle. Based on this information, the Driving Support ECU Assembly sends pre-collision control operation signals. When the vehicle is determined to be driving in a straight line or on a gradual curve based on signals from the airbag sensor assembly etc., the Millimeter Wave Radar Sensor Assembly performs self-diagnosis to check if the sensor beam axis has deviated from the vehicle movement direction. When the Millimeter Wave Radar Sensor Assembly beam axis has deviated, the Driving Support ECU Assembly detects this, and stores DTC C1A11. After installing a new Millimeter Wave Radar Sensor Assembly, if sensor beam axis adjustment is not performed, DTC C1A14 is stored.

OBDII Code C1A11 2013 Toyota RAV4 - Front Radar Sensor Incorrect Axial Gap - AutoCodes.com — C1A11 2013 Toyota RAV4 Code - Front Radar Sensor Incorrect Axial Gap

What does this mean?

What are the Possible Causes of the DTC C1A11 2013 Toyota RAV4?

Faulty Millimeter Wave Radar Sensor Assembly
Millimeter Wave Radar Sensor Assembly harness is open or shorted
Millimeter Wave Radar Sensor Assembly circuit poor electrical connection
Faulty Forward Recognition Camera (If equipped)
Faulty Driving Support ECU Assembly

How to Fix the DTC C1A11 2013 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 does this mean?

Code Tech Notes

When replacing the Driving Support ECU Assembly, make sure to replace it with a new one. If a device that was installed on another vehicle is used, the information stored in the Driving Support ECU Assembly will not match the information from the vehicle, and as a result, a DTC may be stored.
When the Millimeter Wave Radar Sensor Assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
If the Forward Recognition Camera has been replaced with a new one, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1A11 2013 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.

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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 C1A11 2013 Toyota RAV4 Code

1. What are the common symptoms of OBDII code C1A11 in a 2013 Toyota RAV4?

The common symptoms of OBDII code C1A11 in a 2013 Toyota RAV4 include the malfunction indicator lamp (MIL) or check engine light illuminating on the dashboard and a warning message related to the front radar sensor incorrect axial gap.

2. What does the OBDII code C1A11 "Front Radar Sensor Incorrect Axial Gap" in a 2013 Toyota RAV4 indicate?

The OBDII code C1A11 in a 2013 Toyota RAV4 indicates that there is an issue with the front radar sensor's axial gap, which is responsible for detecting objects in front of the vehicle for safety features like adaptive cruise control and collision avoidance systems.

3. What are the possible causes of OBDII code C1A11 in a 2013 Toyota RAV4?

Possible causes of OBDII code C1A11 in a 2013 Toyota RAV4 include misalignment or damage to the front radar sensor, wiring or connector issues, electronic control module (ECM) problems, or calibration errors.

4. How can I diagnose the OBDII code C1A11 in my 2013 Toyota RAV4?

Diagnosing OBDII code C1A11 in a 2013 Toyota RAV4 typically involves checking the front radar sensor for physical damage or misalignment, inspecting the wiring and connectors for any issues, and performing calibration checks using diagnostic tools.

5. Can I drive my 2013 Toyota RAV4 with OBDII code C1A11 "Front Radar Sensor Incorrect Axial Gap"?

It is recommended to address the issue causing OBDII code C1A11 in a 2013 Toyota RAV4 as soon as possible to ensure the proper functioning of safety features relying on the front radar sensor. Continued driving with this fault may disable certain advanced safety systems.

6. Is it possible to reset OBDII code C1A11 in a 2013 Toyota RAV4 without fixing the underlying issue?

Resetting OBDII code C1A11 in a 2013 Toyota RAV4 without addressing the root cause, such as sensor misalignment or damage, may temporarily clear the code but will likely result in the issue recurring and potentially affecting the vehicle's safety systems.

7. Can I repair OBDII code C1A11 in my 2013 Toyota RAV4 myself, or do I need to take it to a professional?

Repairing OBDII code C1A11 in a 2013 Toyota RAV4 may require specialized tools and knowledge, especially when it involves recalibration or sensor alignment. It is recommended to consult a professional mechanic or dealership for proper diagnosis and repair.

8. How much does it typically cost to repair OBDII code C1A11 "Front Radar Sensor Incorrect Axial Gap" in a 2013 Toyota RAV4?

The cost of repairing OBDII code C1A11 in a 2013 Toyota RAV4 can vary depending on the specific issue causing the fault. Costs may include diagnostic fees, sensor replacement, recalibration, or wiring repairs, so it is advisable to get a detailed estimate from a qualified technician.

9. Are there any recalls or technical service bulletins related to OBDII code C1A11 in the 2013 Toyota RAV4?

Owners of a 2013 Toyota RAV4 experiencing OBDII code C1A11 may want to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to front radar sensor issues to see if there are any applicable remedies or solutions provided.

10. How can I prevent OBDII code C1A11 from appearing in my 2013 Toyota RAV4 in the future?

To help prevent OBDII code C1A11 in a 2013 Toyota RAV4, regular maintenance checks, ensuring proper sensor alignment, avoiding physical damage to the front radar sensor, and addressing any warning lights promptly can all contribute to maintaining the vehicle's safety systems.