MUCAR CDE900 MAX - System Updates and Troubleshooting; Software and App Updates; Frequently Asked Questions (FAQ)

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including all diagnostic-related data such as diagnostic reports, and data stream records.
· Repair Info: This module includes four sections:
1) Instruction: View Product Brochure.
2) Coverage List: The supported vehicles’ information.
3) Video: Contains table usage tips, maintenance, and diagnostic guides.
4) Learning Course: Demonstrates how to operate the tool.
· Update: This module allows you to update the diagnostic software & App to the latest
version. A pop-up message will indicate newer software is available if you don't update
the software in the process of registration.
12. FAQ
Q: Why does MUCAR CDE900 MAX have no responses when it is connected to a car?
A: Check if the connection with the vehicle diagnostic socket is solid,or check if the ignition
switch is on,or if the tool supports the car.
Q: Why does the system stop when reading the data stream?
A: It may be caused by a slackened connector.Please turn off the scanner, fi rmly connect
the connector,and switch it on again.
Q: Communication error with vehicle ECU?
A: Please confi rm the following cases:
· Whether diagnostic connector is correctly connected.
· Whether ignition switch is ON.
Or,send your vehicle's year, make, model and VIN number to us using Feedback feature
for timely technical assistance.
Q: Why does the screen fl ash when the engine ignition starts?
A: It is normal and caused by electromagnetic interference.
Q: How to upgrade the system software?
A: 1.Power on the tool and ensure a stable Internet connection.
2. Go to "Settings" → "Update"→ "App" ,tap "OTA" and then tap "check version" to enter
the system upgrade interface.
3.Complete the process by following the instructions on the screen step by step. It may
take a few minutes depending on the status of your network.
After the upgrade is fi nished,the tool will automatically restart and display the main
interface.