AutoCodes – Toyota – U0163 2018 Toyota RAV4

U0163 2018 Toyota RAV4 Code - Lost Communication with Navigation Control Module

Quick Answer

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Navigation Control Module, Navigation Control Module harness is open or shorted. 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: U0163 2018 Toyota RAV4 indicates Lost Communication with Navigation Control Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Navigation Control Module, Navigation Control Module harness is open or shorted.
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 537

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 27, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0163 2018 Toyota RAV4 Description

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits. Communication is carried out using two dedicated wires, known as CAN high and CAN low, with both lines carrying 2.5V when the CAN bus is in idle mode. During the transmission of data bits, the CAN high line increases to 3.75V while the CAN low drops to 1.25V, creating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Navigation Control Module has not been received.

OBDII Code U0163 2018 Toyota RAV4 - Lost Communication with Navigation Control Module - AutoCodes.com — U0163 2018 Toyota RAV4 Code - Lost Communication with Navigation Control Module

What does this mean?

What are the Possible Causes of the DTC U0163 2018 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
Faulty Navigation Control Module
Navigation Control Module harness is open or shorted
Navigation Control Module circuit poor electrical connection

How to Fix the DTC U0163 2018 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 there are problems with the way different systems in a vehicle communicate with each other using a technology called Controller Area Network (CAN) communication, Diagnostic Trouble Codes (DTC) are displayed. These codes can be caused by issues with the main bus or branch of the communication network, or with the Electronic Control Units (ECUs) and sensors that make up the different systems. If you see code for both the CAN communication problems and internal or power source problems at the same time, you should focus on fixing the internal or power source problems first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0163 2018 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 U0163 2018 Toyota RAV4 Code

1. What does the OBDII code U0163 mean on a 2018 Toyota RAV4?

The code U0163 indicates a communication problem between the vehicle's onboard diagnostic system and the Navigation Control Module.

2. What are the common symptoms of U0163 in a 2018 Toyota RAV4?

Common symptoms include loss of communication with the navigation system, navigation system malfunctions, and potentially a disabled navigation display.

3. What are some possible causes of the U0163 code in a 2018 Toyota RAV4?

Potential causes of the U0163 code include a faulty Navigation Control Module, wiring issues, a blown fuse, or a software glitch in the navigation system.

4. How can I diagnose the U0163 code on my 2018 Toyota RAV4?

Diagnosing the U0163 code typically involves checking the wiring connections to the Navigation Control Module, inspecting for any visible damage, and using a diagnostic scanner to assess the communication status.

5. Can I still drive my 2018 Toyota RAV4 with the U0163 code present?

In most cases, it is safe to drive the vehicle with the U0163 code, but it's recommended to get the issue diagnosed and repaired to ensure the proper functioning of the navigation system.

6. What are some DIY repair tips for fixing the U0163 code on a 2018 Toyota RAV4?

DIY repair tips may include checking and tightening the wiring connections, inspecting and replacing any blown fuses related to the navigation system, and resetting the navigation system software.

7. Should I seek professional help to fix the U0163 code on my 2018 Toyota RAV4?

If you are not familiar with automotive diagnostics and repair, it is advisable to seek professional help to accurately diagnose and repair the U0163 code to avoid causing further damage.

8. Is the U0163 code a common issue in 2018 Toyota RAV4 vehicles?

While the U0163 code may not be extremely common, it can still occur due to various factors affecting the communication between the vehicle's systems and the Navigation Control Module.

9. Can the U0163 code be a recurring problem in a 2018 Toyota RAV4?

If the root cause of the U0163 code is not properly addressed, it can potentially become a recurring issue, leading to intermittent communication failures with the navigation system.

10. What is the typical cost to repair the U0163 code on a 2018 Toyota RAV4?

The cost of repairing the U0163 code can vary depending on the exact cause of the issue, but it may involve expenses related to parts replacement, wiring repairs, diagnostic services, and labor charges from a mechanic or dealership.