MBZ C CLASS W202, EIS repair 1d69j

**dd1** · 4th July, 2018, 08:13 PM

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** · 5th July, 2018, 05:20 PM

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

**droidwayne65** · 5th July, 2018, 11:08 PM

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** · 6th July, 2018, 12:17 AM

Originally Posted by 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 .

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** · 6th July, 2018, 01:32 AM

Originally Posted by dd1

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** · 13th July, 2018, 12:54 AM

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** · 13th July, 2018, 05:15 PM

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

**doctore** · 14th July, 2018, 08:50 AM

Originally Posted by dd1

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** · 14th July, 2018, 05:07 PM

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