Received a request for help from the repair shop**, an 11-year-old Zhonghua H530, the original car BCM was blistered, and the vehicle could not be started if the BCM was replaced.
After inquiry, it was learned that the car was started with a key, and the vehicle also had an anti-theft coil. Let the repair shop take a picture, and find that this car is BCM anti-theft, and the anti-theft data is not stored in the anti-theft coil, which is a base station to amplify the role of the signal.
We know that the fixed password of Zhonghua car is 3950, let the repair shop reset the BCM with the equipment, and then match the BCM and the learning key. However, the repair shop reported that the vehicle could not communicate and could not be matched with the equipment. I had to ask the repair shop to remove the engine computer, BCM and the original car key and bring it to us, and manually rewrite the anti-theft data for him to complete the matching.
There are two types of BCM for this model, but the appearance is different and the data format is the same.
First of all, you need to disassemble the engine computer to get the synchronization data. The car is powered by a Bosch ME7 engine computer, and the data is stored in an octapod 95080. The data can be read directly with the programmer.
The anti-theft data of the BCM is then rewritten based on the synchronization data and frame number in the engine computer.
Write the synchronization data, frame number and key ID of the original car from the engine computer to BCM. Because the key ID and synchronization data of the original car are used, the synchronization data contains the key P byte of the key, so when the data is modified and loaded, the original car key can directly start the vehicle.