What is the difference among Xtool D8 BT, D9 and D9 Pro diagnostic scanner?

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What is the difference among Xtool D8 BT, D9 and D9 Pro diagnostic scanner?

First of all, check a table comparison here:

Item	Xtool D8 BT	Xtool D9	Xtool D9 Pro
Screen	8 inch	9.7 inch	9.7 inch
Processor	1.8Ghz quad-core	1024×768	Quad-Core 1.8GH
Storage	64GB	2GB+ 128GB	2GB RAM & 128GB ROM
Operating System	Android 5.1.1	Android 10.0	Android 10.0
Display resolution	‎1024 x 768	1024×768	1024×768
Battery	10,000 mAh built-in battery	10000mAh	10000m Ah
Connection	USB, WiFi, Bluetooth	USB, WiFi, Bluetooth	USB, WiFi, Bluetooth
CAN FD Protocol	Yes, Compatible with 2020MY and later BUICK / CHEVROLET / CADILLAC / GMC / HOLDEN, etc.	Yes, Compatible with 2020MY and later BUICK / CHEVROLET / CADILLAC / GMC / HOLDEN, etc.	Yes, Compatible with 2020   MY and later BUICK CHEVROLET  CADILLAC GMC HOLDEN, etc.
DoIP protocol		Yes	Yes
VCI	Wireless VCI	Xtool DoIP VCI	Xtool DoIP VCI J2534
Full system diagnostic	Yes	Yes	Yes
AutoScan & AutoVIN	AutoVIN	Yes	Yes
Full Bi-Directional Controls	Yes	Yes	Yes
ADAS CALIBRATION	Yes	Yes	Yes
Special Functions	38+ Special Functions	42+ Special Functions	42+ Special Functions
Key Programming	Yes with KC501	Yes with KC501	Yes with KC501
ECU Coding	VW / AUDI / Škoda. Ecu coding	VW / AUDI / Škoda. Ecu coding	BMW / VW / AUDI / Škoda / BENZ ecu coding
VAG Guided Function	Yes	Yes	Yes
Flash Hidden Functions	Yes	Yes	Yes
ECU Programming	No	No	BMW Benz VW Audi SKODA online ECU programming,   Program Ford Mazda Programmable Module Installation (PMI) offline
Topology Mapping	No	Yes	Yes
Live Data Graphing	Export Live Data as CSV	Export Live Data as CSV; 8-In-1 Graphing; Graph up to 8 sensors individually on the same screen, etc	Export Live Data as CSV;   8-In-1 Graphing; Graph up to 8 sensors individually on the same screen, etc
Endoscope		Yes, XV100, package not included	Yes, XV100,   package not included
NON-OBD2 connector Kit	Yes	Yes	Yes
Update	3 years free update	3 years free update,   $258 per year later	3 years free update,   $358 per year later

The difference between the D9 and the D9 Pro is:

• D9 Pro supports ECU CODING for BMW / VW / AUDI / Škoda / BENZ…. The D9 only supports the VW / AUDI / Škoda.
• D9 Pro supports ECU PROGRAMMING for BMW/ VW / AUDI / Škoda / BENZ / FORD (Offline) / MAZDA (Offline)…. the D9 does not.
• The update fee for the D9 is $258, and the update fee for the D9 Pro is $358 after the 3 years of free updates.

The difference between D9 Pro and D8/D8BT is: 

The X-Tool D9 Pro kit is the top of the range tool by X Tool, and will let you do pretty much everything the garage & Main Dealer workshop will do. It is one of the most advanced Scan Tool & Coding kits I have ever worked with.

D9 screen is roughly 1″ larger than the D8. Both the D8 and D9 will cover all main systems like engine, abs, airbags, transmission, steering, brake and so much more. They can both do Auto VIN, Read ECU Info, Read codes, Clear Codes, Read Live data Freeze Frame Data, Actuation/bi directional tests. Coding & guided function. The D9 PRO can do ECU coding & programming For special/service functions, both the D8 & D9 will cover the following:

OIL LIGHT RESETS EPB

– ELECTRONIC PARKING BRAKE SAS

– STEERING ANGLE SENSOR DPF

– DIESEL PARTICULATE FILTER FORCE REGENERATION BMS

– NEW BATTERY REGISTRATION

THROTTLE RESET

TPMS RESET

INJECTOR CODING

ABS BRAKE BLEEDING

KEY PROGRAMMING

GEARBOX MATCHING

SUSPENSION CALIBRATION

WINDO INITIALISATION

SEAT CALIBRATION

ECU CONFIGURATION

A/F SETTINGS

START.STOP SYSTEM RESET

AIRBAG REPAIR

LANGUAGE CHANGE

INSTRUMENT CLUSTER

MILEAGE CORRECTION

TRANSPORT MODE

TYRE UPGRADES

GEAR LEARNING

POWER BALANCE EEPROM

ELECTRONIC PUMP ACTIVATION

ADAS CALIBRATION

The following functions are only supported by the D9 Pro:

SPEED LIMIT

CLUTCH ADAPTION

SRS

ADBLUE RESET

EGR RELEARN

FRM RESET

NOX RESET

VIN

VGT RELEARN

HV BATTERY

A/C RELEARN

RAIN/LIGHT SENSOR

RESET CONTROL UNIT

ODOMETER READ

Both the D9 and D9 Pro are both wireless Bluetooth. The D9 Pro comes with ECU programming capabilities on VW, Mercedes, BMW, and offline ECU programming on Ford, Mazda while XTOOL D9 does not.
A few things important to note:

• If you don’t need ecu programming function, you don’t need to update D8 to D9 because they are similar.
• The D8BT (bluetooth) can NOT be wired in the event the BT fails. However, the D9 CAN be wired if the BT fails.
• ECU Programming is available on the D9 but limited to VW/Audi/Skoda. ECU Programming on the D9 Pro is expanded to BMW, Mazda, Benz, Ford, VW/Audi/SKODA.
• D9/D9 Pro has the topology scanning to see the network diagram.

2. XTool D7 vs D8 vs D9 vs D9 Pro

The XTOOL D series diagnostic tool includes D7, D8, D9, and D9 Pro. All of these tools are designed for vehicle diagnostics, and they can perform basic functions like reading and clearing fault codes, viewing live data, and performing maintenance services like oil reset, EPB reset, and battery reset.

The D7, D8, D9, and D9 Pro have different display sizes, operating systems, processors, and memory configurations. The D9 Pro has the most advanced features, including key programming and ECU coding, while the D7 is the most basic of the four.

Overall, the XTOOL D series diagnostic tools are designed to offer OE-level full diagnoses, fast troubleshooting, and efficient repair, making them ideal for professional mechanics and DIY enthusiasts.

Here’s a comparison table of the Xtool D7, D8, D9, and D9PRO diagnostic tools:

Model	Xtool D7	Xtool D8	Xtool D9	Xtool D9PRO
Display	7-inch touchscreen	8-inch touchscreen	9.7-inch touchscreen	9.7-inch touchscreen
Operating System	Android 4.4.4	Android 4.4.4	Android 7.1	Android 7.1
Processor	Quad-core 1.6GHz	Quad-core 1.8GHz	Quad-core 1.8GHz	Quadcore 1.8GHz
Memory	1GB RAM, 32GB ROM	2GB RAM, 64GB ROM	2GB RAM, 64GB ROM	2GB RAM, 64GB ROM
Battery	4000mAh	10000mAh	11000mAh	10000mAh
Connectivity	USB	USB	USB, Bluetooth	USB, Bluetooth
OBDII Functions	Full System	Full System All Functions	Full System All Functions	Full System All Functions
Special Functions	36	38	42	42
J2534 protocol	No	No	No	No
CAN FD	Support M811	Yes	Yes	Yes
ECU Coding /Programming	No	No	No	Yes
Update	Free Online Update(3 Years)	Free Online Update(3 Years)	Free Online Update(3 Years)	Free Online Update(3 Years)
Vehicle Coverage	OBDII-compliant vehicles	OBDII-compliant vehicles	OBDII-compliant vehicles and some non-OBDII vehicles	OBDII-compliant vehicles and some non-OBDII vehicles