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Launch CRT 501 Series User Manual

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V1.00.000
09-08-2022

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Frequently Asked Questions (12)

  • How do I use the Launch CRT 501 Series scanner?

    To use the Launch CRT 501 Series scanner, first ensure it is charged by connecting it to an AC outlet or the vehicle's DLC. Press the power button for about 3 seconds to turn it on. For initial use, you will need to make some system settings, including selecting the system language, time zone, and connecting to a WLAN network for updates. After setup, the main menu, or Job Menu, provides access to functions such as TPMS operations, OBD II diagnosis, reset functions, OE inquiry, software upgrade, and general settings.

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  • How do I update the software on my Launch CRT 501 Series scanner?

    To update the software, tap Upgrade on the Job menu to enter the update center. By default, all diagnostic software is selected. To deselect certain software, tap Unselect and uncheck the box next to the vehicle model. Tap Update to start downloading. Once the download is finished, the software packages will be installed automatically. A numeric indicator will display on the Upgrade module on the Job menu if new software or APK can be updated. This function requires a stable network connection.


    For more information, see page 45 of the manual.
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  • Can the Launch CRT 501 Series scanner display live data streams from the vehicle?

    Yes, the Launch CRT 501 Series scanner can display live data streams. The Read Live Data function retrieves and displays live data and parameters from the vehicle's ECU.


    For more information, see page 40 of the manual.
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  • Can the Launch CRT 501 Series scanner diagnose engine problems?

    Yes, the Launch CRT 501 Series scanner can diagnose emission-related engine problems. Its OBD II Diagnosis function allows it to check for Diagnostic Trouble Codes (DTCs), isolate the cause of the illuminated Malfunction Indicator Lamp (MIL), check monitor status before emissions certification testing, verify repairs, and perform other services that are emission-related.


    For more information, see page 7 of the manual.
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  • How do I clear fault codes using the Launch CRT 501 Series scanner?

    To clear fault codes, use the Clear Fault Code function after retrieving codes and carrying out necessary repairs. Ensure the vehicle's ignition key is in the ON position with the engine off before performing this operation. Note that clearing DTCs does not fix the underlying problem that caused the codes to be set.


    For more information, see page 40 of the manual.
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  • What car brands and models are compatible with the Launch CRT 501 Series scanner?

    The tool is specially designed to work with all OBD II compliant vehicles, including Controller Area Network (CAN). This includes all 1996 and newer American, Asian, and European vehicles (cars and light trucks) sold in the United States. A small number of 1994 and 1995 model year gasoline vehicles are also OBD II compliant if they have a Vehicle Emissions Control Information (VECI) Label designating "OBD II Certified".


    For more information, see page 7 of the manual.
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  • How do I perform a diagnostic scan with the Launch CRT 501 Series scanner?

    To perform a diagnostic scan:

    1. Turn the ignition off.
    2. Locate the vehicle's 16-pin Data Link Connector (DLC).
    3. Plug one end of the diagnostic cable into the vehicle's DLC port, and the other end to the DB-15 diagnostic connector of the tool, then tighten the captive screws.
    4. Turn the ignition on; the engine can be off or running.
    5. The system will automatically turn on and navigate to the main menu screen.
    6. Tap OBD II in the Home Menu after the tablet is properly connected to the vehicle's DLC port. The tablet will then start an automatic check of the vehicle's computer to determine the communication protocol.
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  • What types of diagnostic trouble codes (DTCs) can the Launch CRT 501 Series scanner read?

    The Launch CRT 501 Series scanner can read OBD II Diagnostic Trouble Codes. These codes are five-digit alphanumeric codes. The 1st character is a letter (B, C, P, or U) that identifies the main system where the fault occurred (Body, Chassis, Powertrain, or Network). The 2nd character is a numeric digit (0 through 3) that identifies the type of code (Generic or Manufacturer-Specific). Generic DTCs are used by all vehicle manufacturers, while Manufacturer-Specific DTCs are controlled by the vehicle manufacturers. The 3rd character is a letter or numeric digit identifying the specific system or sub-system, and the 4th and 5th characters are letters or numeric digits identifying the section of the system that is malfunctioning.


    For more information, see page 11 of the manual.
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  • What does OBD2 mean on the Launch CRT 501 Series scanner?

    OBD II stands for On-Board Diagnostics Generation Two. It is an enhanced diagnostic system that monitors the functions of various emissions-related components and systems to make information readily available for evaluation. The main objectives of the OBD II System include detecting degraded and/or failed emissions-related components or systems, expanding emissions-related system monitoring through Monitors, using a standardized Diagnostic Link Connector (DLC) in all vehicles, standardizing code numbers, code definitions, and language for faults, and expanding the operation of the Malfunction Indicator Lamp (MIL).

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  • What are the common error messages on the Launch CRT 501 Series scanner and how do I fix them?

    Common issues and their solutions include:

    • System halts when reading data stream: This may be caused by a slackened connector. To fix, turn off the tool, firmly connect the connector, and switch it on again.
    • Screen of main unit flashes at engine ignition start: This is caused by electromagnetic disturbing and is a normal phenomenon.
    • No response when communicating with on-board computer: Confirm the proper voltage of the power supply and check if the throttle has been closed, the transmission is in the neutral position, and the water is in proper temperature.
    • So many fault codes: Usually, this is caused by poor connection or fault circuit grounding.

    For more information, see page 46 of the manual.
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  • How do I register my Launch CRT 501 Series scanner for online updates?

    During the initial setup of the tool, after powering it on and setting up the WLAN network connection, you will be prompted to read the terms and conditions of the user agreement. To finish the sign-up process and navigate to the Job Menu, you must check the box before "Agree to all the above terms" and tap OK. Once online, you can then register your tool and update diagnostic software & APK.

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  • Does the Launch CRT 501 Series scanner require battery power to operate?

    The tool contains an internal Lithium Polymer battery. It can be charged via an AC outlet or through the vehicle's OBD Diagnostic Port. When connected to the OBD diagnostic port, it will be charged automatically. The input voltage can be 9 ~ 18V via the OBD diagnostic port or 5V via a USB cable.

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حميد عقراواي
September 17, 2025

مرحبا فريق CRT 501 هل يمكن المساعدة من حضرتكم

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Summary of Contents for Launch CRT 501 Series

  • Page 1 V1.00.000 09-08-2022...
  • Page 2 Statement: LAUNCH owns the complete intellectual property rights for the software used by this product. For any reverse engineering or cracking actions against the software, LAUNCH will block the use of this product and reserve the right to pursue their legal liabilities.
  • Page 3 LAUNCH CRT 501 Series User Manual the warranty right. • Caution: This tool contains an internal Lithium Polymer battery. The battery can burst or explode, releasing hazardous chemicals. To reduce the risk of fire or burns, do not disassemble, crush, pierce or dispose of the battery in fire or water.
  • Page 4 LAUNCH CRT 501 Series User Manual nearby. • Don’t connect or disconnect any test equipment while the ignition is on or the engine is running. FCC Statement Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

  • Page 5: Table Of Contents

    LAUNCH CRT 501 Series User Manual Table of Contents 1 Introduction ....................1 2 General Information ..................3 2.1 On-Board Diagnostics (OBD) I ..............3 2.2 On-Board Diagnostics (OBD) II ..............3 2.3 Diagnostic Trouble Codes (DTCs) ..............5 2.4 Location of the Data Link Connector (DLC)..........6 3 Product Descriptions ..................8...
  • Page 6 LAUNCH CRT 501 Series User Manual 4.3.14 Screen Capture................14 4.3.15 Data ....................14 5 TPMS Operations ..................16 5.1 Activate Sensor..................18 5.2 Program Sensor ..................22 5.2.1 Auto create..................22 5.2.2 Manual input ..................23 5.2.3 Copy by Activation ................24 5.2.4 Copy by OBD ..................25 5.3 Learning Service..................27...

  • Page 7: Introduction

    LAUNCH CRT 501 Series User Manual 1 Introduction This tool provides the following functions: TPMS: • Trigger the TPMS sensor • Program the TPMS sensor • Provide TPMS relearning procedures and sensor OE number lookup OBD II Diagnosis: Check for DTCs, isolate the cause of the illuminated Malfunction Indicator Lamp (MIL), check monitor status before emissions certification testing, verify repairs, and perform other services that are emission-related.
  • Page 8 LAUNCH CRT 501 Series User Manual 2. Government regulations mandate that all OBD II compliant vehicles must have a “common” 16-pin Data Link Connector (DLC). Note: Some 1994 and 1995 vehicles have 16-pin connectors but are not OBD II compliant. Only those vehicles with a Vehicle Emissions Control Label stating...

  • Page 9: General Information

    LAUNCH CRT 501 Series User Manual 2 General Information 2.1 On-Board Diagnostics (OBD) I Note: With the exception of some 1994 and 1995 vehicles, most vehicles from 1982 to 1995 are equipped with some type of first generation On-Board Diagnostics.
  • Page 10 LAUNCH CRT 501 Series User Manual showed the following: • A large number of vehicles had deteriorating or degraded emissions-related components. These components were causing an increase in emissions. • Because OBD I systems only detect failed components, the degraded components were not setting codes.

  • Page 11: Diagnostic Trouble Codes (Dtcs)

    LAUNCH CRT 501 Series User Manual • To standardize communication procedures and protocols between the diagnostic equipment (Diagnostic Tools, Code Readers, etc.) and the vehicle’s on-board computer. 2.3 Diagnostic Trouble Codes (DTCs) OBD II Diagnostic Trouble Codes are codes that are stored by the on-board computer diagnostic system in response to a problem found in the vehicle.

  • Page 12: Location Of The Data Link Connector (Dlc)

    LAUNCH CRT 501 Series User Manual P0201 - Injector circuit malfunction, Cylinder 1 2.4 Location of the Data Link Connector (DLC) The DLC (Data Link Connector or Diagnostic Link Connector) is typically a 16-pin connector where diagnostic code readers interface with the vehicle’s...
  • Page 13 LAUNCH CRT 501 Series User Manual instrument panel, under or around the driver’s side for most vehicles. For some vehicles with special designs, the DLC location may vary. Refer to the following figure for location. Opel, Volkswagen, Audi Honda Volkswagen...

  • Page 14: Product Descriptions

    LAUNCH CRT 501 Series User Manual 3 Product Descriptions 3.1 General Controls 1. TPMS Antenna 2. TF Card Slot 3. Charging Port Connect the power adaptor charge the tool. 4. DB15 Diagnostic Connector Connects the tool to the vehicle’s Data Link Connector (DLC).

  • Page 15: Specifications

    LAUNCH CRT 501 Series User Manual Navigate to the Job Menu screen. Button Returns to previous menu. 3.2 Specifications • Screen: 4” LCD display with a resolution of 400*800 dpi • Input voltage: 9 ~ 18V via OBD diagnostic port / 5V via USB cable •...

  • Page 16: Initial Use

    LAUNCH CRT 501 Series User Manual 4 Initial Use 4.1 Charging & Turning On/Off 4.1.1 Charging There are three methods available for charging the tool. 1. Via AC outlet Connect one end of the charging cable to the charging port of the tool, and other end to the power adaptor.

  • Page 17: Job Menu

    LAUNCH CRT 501 Series User Manual LANs. Choose the desired WLAN access point / network, • If the network you chose is open, you can connect directly. • If the selected network is encrypted, you have to enter the right security key (network password).

  • Page 18: Settings

    LAUNCH CRT 501 Series User Manual Modules Descriptions Perform various TPMS operations. It mainly TPMS includes TPMS sensor activation, programming, relearning and TPMS diagnostics functions. This function presents a quick way to check for DTCs, isolate the cause of the illuminated...

  • Page 19: Report

    LAUNCH CRT 501 Series User Manual 4.3.4 Report This option allows you to manage diagnostic report. 4.3.5 Display/Brightness This item allows you to set the standby time and screen brightness. Note: Reducing the brightness of the screen is helpful to conserve the power of the tool.

  • Page 20: Recovery

    LAUNCH CRT 501 Series User Manual 4.3.12 Recovery Use this item to reset this tool to the default factory setting. Warning: Resetting may cause data loss. Before doing so, please be careful to perform this operation. 4.3.13 Clean Up This option allows user to clear some cache files and free up some storage space.
  • Page 21 LAUNCH CRT 501 Series User Manual 5. FAQ The option collects some frequently asked questions and solutions. 6. Product Manual The user manual is integrated on the tool for your easier check and reference. 4.16 About This option displays the hardware configuration information of the tool and...

  • Page 22: Tpms Operations

    LAUNCH CRT 501 Series User Manual 5 TPMS Operations For initial use, please follow the flow chart below to start using it. Enter TPMS Select vehicle manufacturer Select vehicle model Select vehicle year Select the TPMS function (See *Note) Note: For indirect TPMS vehicle, only the Relearning function is supported.
  • Page 23 LAUNCH CRT 501 Series User Manual 2. Tap BMW to enter the vehicle model selection screen. 3. Tap 5 Series to enter the following year selection screen.

  • Page 24: Activate Sensor

    LAUNCH CRT 501 Series User Manual 4. Tap the desired option to enter the TPMS function selection screen. Note: For indirect TPMS vehicle, only the Learning function is supported. For vehicle using Direct TPMS, it generally includes: Activation, Programming and Relearning.
  • Page 25 LAUNCH CRT 501 Series User Manual 2. For universal sensors, place the TPMS antenna of the tool alongside the valve stem, point toward the sensor location, and tap Activate on the screen. Notes: 1. For early magnet-activated sensors, place the magnet over the stem and then place the tool alongside the valve stem.
  • Page 26 LAUNCH CRT 501 Series User Manual Once the sensor information is successfully retrieved, the tool will sound a series of beep and the screen will display the sensor data in the Ac ID field. Notes: 1. The tool will do TPMS test in a sequence of FL (Front Left), FR (Front Right), RR (Rear Right), LR (Rear Left) and SPARE, if the vehicle has the option for the spare.
  • Page 27 LAUNCH CRT 501 Series User Manual If the users intend to read the original sensor ID stored in the ECU, connect the tool to the vehicle’s DLC via the diagnostic cable and tap Read ECU ID to read the information of the four TPMS sensors. After the sensor information is...

  • Page 28: Program Sensor

    BAT: indicates the battery power level. 5.2 Program Sensor This function allows users to program the sensor data to the LAUNCH-sensor and replace faulty sensor with low battery life or one that is not functioning. The following options are available for programming LAUNCH-sensor: Auto Create, Manual Create, Copy ID by Activation and Copy ID by OBD.

  • Page 29: Manual Input

    ID. Select the wheel which needs to be programmed on the tool, place a LAUNCH-sensor close to the TPMS antenna of the tool, and tap Auto to create a new random sensor ID. Tap Programming to start detecting the sensor and writing the new created sensor ID to the LAUNCH-sensor.

  • Page 30: Copy By Activation

    Note: Do not enter the same ID for each sensor. Select the wheel which needs to be programmed on the tool, place a LAUNCH-sensor close to the TPMS antenna of the tool. Tap Programming to start writing the new sensor ID to the LAUNCH-sensor.

  • Page 31: Copy By Obd

    After the information is retrieved, it will be displayed on the screen. Place a LAUNCH-sensor close to the TPMS antenna of the tool, tap Programming to start writing the retrieved sensor information to the LAUNCH- sensor.
  • Page 32 IDs and positions for viewing. 3. Tap OK to confirm and then tap the Programming tab to enter. 4. Place a LAUNCH-sensor close to the TPMS antenna of the tool, select the desired wheel position and tap Copy by OBD.

  • Page 33: Learning Service

    LAUNCH CRT 501 Series User Manual 5. Tap Programming to start writing the copied sensor information to the LAUNCH-sensor. 5.3 Learning Service This function allows you to check and view the detailed TPMS sensor relearn procedures. Relearn operation applies only when the newly programmed sensor IDs are different from the original sensor IDs stored in the vehicle’s ECU.

  • Page 34: Oe Inquiry

    LAUNCH CRT 501 Series User Manual On-screen Buttons: Read DTC: Tap to read the TPMS diagnostic trouble codes stored in the vehicle’s ECU. Clear DTC: Tap to clear the existing TPMS diagnostic trouble codes. Note: • This function requires the tool to connect with the vehicle’s OBD socket.
  • Page 35 LAUNCH CRT 501 Series User Manual Tap the target sensor manufacturer to enter the following screen. Check the original manufacturer number on the body of the sensor, and tap the corresponding OE number on the screen to enter the following screen.
  • Page 36 CRT 501 Series User Manual Tap Activate to trigger and check the sensor data. Tap Programming to write the sensor data into a new blank LAUNCH-sensor. Tap Technical Support to check which vehicle models the sensor can be applied on.

  • Page 37: Obd Ii Diagnosis

    LAUNCH CRT 501 Series User Manual 6 OBD II Diagnosis 6.1 Connection 1). Turn the ignition off. 2). Locate the vehicle’s 16-pin Data Link Connector (DLC). Refer to Chapter 2.4. 3). Plug one end of the diagnostic cable into the vehicle’s DLC(Data Link Connector) port, and the other end to the DB-15 diagnostic connector of the tool, and then tighten the captive screws.

  • Page 38: Start Diagnostics

    LAUNCH CRT 501 Series User Manual Notes: • A plastic DLC cover may be found for some vehicles and you need to remove it before plugging the diagnostic cable. • The cable connector is keyed and will only fit one way. If you have problems...

  • Page 39: Read I/M Readiness

    LAUNCH CRT 501 Series User Manual Tap OK, the following OBDII function list appears. 6.2.1 Read I/M Readiness This function checks whether or not the various emissions-related systems on the vehicle are operating properly, and are ready for Inspection and Maintenance testing.

  • Page 40: Read Live Data

    LAUNCH CRT 501 Series User Manual repair of a car fault has been performed correctly. 6.2.2 Read Live Data This function retrieves and displays live data and parameters from the vehicle’s ECU. 6.2.3 Read Freeze Frame This function takes the snapshot of the operating conditions when an emission-related fault occurs.

  • Page 41: Control Operation Of On-Board Component/System

    LAUNCH CRT 501 Series User Manual 6.2.7 Control Operation of On-Board Component/System This option is used to access vehicle-specific subsystem and component tests. Available tests vary by vehicle manufacturer, year, and model. 6.2.8 Read Vehicle Information This function retrieves a list of information (provided by the vehicle manufacturer) from the vehicle’s on-board computer.

  • Page 42: Reset

    LAUNCH CRT 501 Series User Manual 7 Reset In addition to amazing & powerful diagnostic function, the tool also features various service functions. There are two methods to reset service lamp: Manual Reset or Auto Reset. Auto Reset follows the principle of sending command from the tool to vehicle’s ECU to do resetting.

  • Page 43: Electronic Parking Brake Reset (Brake Reset)

    LAUNCH CRT 501 Series User Manual After that, reset the driving mileage or driving time, so as to turn off the service lamp, and enable a new driving cycle. • If the service lamp is not on, but you have changed the engine oil or electric appliances that monitor oil life, you need to reset the service lamp.

  • Page 44: Throttle Matching (Elec. Throttle Rlrn)

    LAUNCH CRT 501 Series User Manual 7.5 Throttle Matching (ELEC. THROTTLE RLRN) This function can initialize the throttle actuator so that the learning value of the ECU returns to the initial state. By doing so, the movement of the throttle (or idle motor) can be more accurately controlled, thus adjusting the intake volume.

  • Page 45: Upgrade

    LAUNCH CRT 501 Series User Manual 8 Upgrade If some new software or APK can be updated, a numeric indicator will display on the Upgrade module on the Job menu. In this case, you may use this option to keep it synchronized with the latest version.

  • Page 46: Faq

    LAUNCH CRT 501 Series User Manual 9 FAQ Here we list some frequently asked questions and answers relating to this tool. Question: System halts when reading data stream. What is the reason? Answer: It may be caused by a slackened connector. Please turn off the tool, firmly connect the connector, and switch it on again.

  • Page 47: Warranty

    The exclusive remedy for any automotive meter found to be defective is repair or replacement, and LAUNCH shall not be liable for any consequential or incidental damages.

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