Sometimes if you program Jaguar or Land rover 2018+ smart key all keys lost under active alarm (i.e 2020 Range Rover K8D2 system RFA is locked), you have to replace and program the RFA Module CPU SPC560B chip. Here is the step-by-step guide to remove, solder and replace KVM RFA mcu processor using the new Yanhua JLR KVM RFA solder kit easily.
Yanhua JLR KVM Solder kit has 2 configurations:
Package A: including following
Package B: full pacakge. with an extra hot air gun and air gun bracket
(If have hot air gun and bracket, just get Pacakge A)
The KVM solder kit is recommended to use with Yanhua module 24 to program JLR 2018+ key via OBD. It is compatible with other JLR key programmers that need to program RFA as well, i.e Lonsdor K518.
How to Replace JLR 2018+ KVM RFA MCU Chip with Yanhua JLR Solder Kit?
Part 1: Remove MCU
Apply Yanhua paint remover to the top of the chip and the pins.
After 30 seconds you can see the protective paint start to peel off
Apply the paint remover to the pin area
After about ninety seconds you can start cleaning the chip with cotton
Then clean the board with contact cleaner to avoid corrosion of the board by paint remover
After paint removal and cleaning
Install the chip limit plate
Apply solder paste to the chip pins
Use temperature and airflow adjustable hot air gun to desolder chip
Use Clamp to secure the chip limit plate
Adjust the height of the hot air gun 8mm above the chip limit plate
Adjust the air volume to 8 gear
Adjust the preheating temperature to 250 degree
Start the hot air gun, keep the temperature at 250, preheat for 90 seconds
After 90 seconds, raise the temperature to 420 degree and heat for 25 seconds
At this point, use the tweezers to hold one corner of the chip. When the chip is loose, clip up the chip.
About twenty-five seconds,the chip is loose, remove the air gun and clip up the chip.
Clean the bottom and pins of the chip with Yanhua paint remover.
Then clean the board with contact cleaner to avoid corrosion of the board by paint remover.
This is the original plate solder on the pad.
Check whether there is short circuit between the plate.
Part 2: Solder MCU
Apply the solder paste to the chip pad.
Install the chip limit plate
Use clamps to secure the chip limit plate
Use Yanhua proprietary chips (Yanhua RFA Module CPU SPC560B Chip with Data), Yanhua has added solder for the chip pin before delivery.
Gentely place the chip into the chip limit plate
Pay attention to the chip pin direction, the dimple on the chip is pin 1.
Apply solder paste to the chip pins and the tops of the chip
Check that the chips are placed correctly.
Use temperature and airflow adjustable hot air gun to blow and solder chip
Adjust the height of the hot air gun 8mm above the chip limit plate
Adjust the air volume to 8 gear
Adjust the preheating temperature to 250
Start the hot air gun, keep the temperature at 250 degree, preheat for 90 seconds
After 90 seconds, raise the temperature to 340 degree and heat for 25 seconds
You can see that the solder on the pin is starting to merge with the solder on the pad.
After 25s, shut down and remove the gun.
Use contact cleaner to clean the solder paste on the chip.
This is the final result after welding and cleaning.
NOTE:
1. Remove the original RFA module, replace the SPC560B chip, write data to the blank chip with clip adapter, no soldering.
2. Yanhua ACDP module 24 platform can automatically detect the communication condition of RFA modules, including blank RFA modules and RFA modules after chip replacement.
3. Install RFA module back to the vehicle, connect Yanhua ACDP with the vehicle via OBD, then program key and learn key via OBD.
How to Program JLR 2018+ Smart Key with Yanhua Mini ACDP Module 24?
