MBZ C CLASS W202, EIS repair 1d69j

[dd1]

HI everyone, i have a mbz C class w202, year 2000, the original eis wont respond. i have a donor eis, with no key. i have read the eis of the original. now, this eis has 2 MCUs. i have only read the 1st one, the easy access. whats the repair procedure for this eis? besides using the donor, any other repairs i can perform? it has the hc705 1d69j. the key wont turn and eis has no communication. thanks in advance

[dd1]

Can anyone help me please ?????????

[droidwayne65]

If you're pretty sure the original is defective, you're gonna have to copy both mcus to the donor. That's it. The original key should work .

[dd1]

If you're pretty sure the original is defective, you're gonna have to copy both mcus to the donor. That's it. The original key should work .
hi, ok the eis has no comm. so i have a donor without the key, so i have to read both MCUs of the original and write it to the donor both?

[droidwayne65]

hi, ok the eis has no comm. so i have a donor without the key, so i have to read both MCUs of the original and write it to the donor both?
Yup, that's about it. :)

[dd1]

Help. I am not getting this, I purchased a used Eis. Took both mcu 1 and 2, marked it, read it and wrote the original mcu info to the used ones. Tried it and no communication. Purchased another one. Did the same thing, again. I lost the communication. I am reading by xprog. Thank you

[dd1]

Any one?????? I'm stuck here

[doctore]

Any one?????? I'm stuck here

if spare lock not same number you can not swap eprom

remove both lock from car make connection and check on bench:)

[dd1]

hi, the eis part numbers are the exact. i had another one, a 3rd one, and i have a communication with the eis but still wont turn and it has some fault codes, internal module fault, i think. and still the key wont turn

[doctore]

remove both lock from car test on bench
post result :)

[Drdiag]

Other solution. With your new eis. Read dumps. Make ecu virgin and program new key (only by programming chip in car original key

[droidwayne65]

Are you able to tell how much current the switch draws when powered up, when key is inserted and when you attempt to turn it?