How to add a key to the Rolls Royce Silver Seraph immobilizer? The car has no keys, all keys are lost.
Engine, wiring, immobilizer unit, and much more from a BMW E38 750.
The keys are written in the EWS3 immobilizer module, mask 2D47J, 0D46J. The module is installed, as in all BMWs, on the left side of the steering wheel.
Not all programmers read EWS3 with a 2D47J mask.The Xprog programmer reads it and only if you unsolder the chip. If you read it as a regular 0D47J, there is a high probability that all data will be lost during reading.
The key chip is ID44 PCF7935. You can use a superchip from Xhorse XT27 super chip.
The procedure for adding a new key is the same for all programmers. Read the dump – save – add a new key – write it back to ews3.
Connect as the instructions show.
There are many videos on the Internet on how to write keys to ews 3, but we did not find information on what to do if ews 3 is damaged.
In my case, the data in ews was already erased, fff was read instead of data.
In the case of BMW, everything is simpler, but Rolls Royce is a slightly different car.
A little about the car:
Rolls Royce Seraph 1998
Engine 5.4 M73
Gearbox type: Automatic transmission
Two ECUs Bosch 0261204466 DME 1437445 M 5.2.1
EWS3 61.35-8 382 455 608 377 UTA
HW 02 SW 05
The car can be diagnosed as a regular BMW E38, but the scanner will not see all the modules.
To synchronize another EWS3 unit, you will need to read the ISN from the engine control unit. I used the M52 Quickflash v2.06 program.
EWS3 was purchased from a BMW E38 car, I think it does not matter from which car you will use the EWS module.
The new module already had the 0D46J mask and was read without any problems. Next, we use the EWS editor program, the program works without a programmer. The program can do virgin (I have not tested this function), edit data.
Open the dump in ewseditor and correct the VIN, mileage, ISN. Next, save, add a new key and write it back to the EWS.
Next, you need to synchronize the DME and EWS. There is a small problem here. If you have a BMW, this can be done with a regular Autel or another scanner for cars. After that, the car will start.
Rolls Royce had another problem, there is no connection with the ews unit. I understood this because Rolls Royce uses its own instrument panel.
In BMW, the connection between EWS and DME is through the instrument panel.
I had to buy a BMW E38 instrument cluster and connect everything on the table. Some people write that a resistor is needed for the instrument cluster to work, but everything worked for me the first time without a resistor.
If I have time, I will draw a diagram of how to connect it correctly. On the table, we connect one DME, EWS and the instrument cluster. If everything is connected correctly, the DME and EWS modules can be diagnosed and synchronized, this is what we need.
I used a round diagnostic connector.
After synchronization, the car will start.
If the car starts but does not respond to the gas pedal, then you need to adapt the throttle valve.
Photos attached:
