[raivis]

Hello,

Ive been dealing with dsc problems these past couple weeks on my E92, and nothing i find on internet helps me figure this out. Hopefully i didnt get a bad used ABS unit.

(Sorry if post gets messy, adhd doesnt help me typing this all out in order)

Lights on dash: ABS trifecta + airbag and seat belt.

Started like 2 months ago after some clutch kicks i would sometimes get abs trifecta, but after driving for a minute it would disappear, codes told me dying rear right sensor (dont remember code). After a week or two it completely died with rear right wheel speed plausibility fault code, so i ordered new sensor. Got it replaced and fault was still present. I looked at live data every single one showed speed except new one, i thought okay its just a bad sensor so i returned it and put in new one, after removing old new one i saw it was eaten up by abs ring, so i changed ring as well. RR has new sensor new ring, problem still there. After couple days i was driving around with my buddy and suddenly lost speedo. My battery was dying so we thought it was just due to bad battery and replaced it the same day since i bought battery before speedo died, welp didnt fix the problem. Codes said both rear wheel speed sensors plausibility error.
Gas gauge was basically not working , i ran out of gas while i still had almost half fuel left according to fuel gauge

Started diagnosing the issue. Swapping sensors did absolutely nothing, i read that abs modules dying is pretty common for E9x chasis. Before commiting to changing abs module i quickly checked fuses just in case - all good.

Ordered a used ABS Module from same engine same chasis same year E92 325i only difference was it was from england so RHD. I knew it will have to be programmed so i got myself a used laptop, found BMW Standard tools and ISTA i had from F30 times.

Looked up all the coding i have to do that i could find online, what i did was:
Code DSC with NCS Expert
Do calibration or whatever with Tool32
Tried resetting values with INPA
Tried to calibrate DSC unit and DSC sensors using ISTA/D, calibration fails everytime.

Fault codes are all for 4 wheel speed sensors, first it was all 3 besides RR that i changed, yesterday i swapped rear sensors, tested and swapped back, after swapping them back now i have plausibility code for RR as well.

Live data from wheel speed sensors all show random values, they all go from 0 to like 8 constantly quite fast.
Also after changing abs module my car now thinks its constantly driving, if u put ignition on speedo always shows between 5-20kmh.

Now the weirdest part about this whole thing is after replacing ABS unit with used one, the E92 is going crazy if you put ignition on and turn it off if you try to put key in it will go in gets locked, but you cant turn ignition on, you can start it just fine, but no ignition, if you turn car on and turn it off you still cant pull key out without force and turn ignition on without shoving key in right past the key lock thingy. But if you drive it for like 20 meters or so then u can turn it off pull key out as normal and turn ignition on. But in case you dont drive it and u have to forcibly pull key out, the light on dash showing handbrake on and error code will stay on, radio will stay on and aftermarket carplay stays on all night long. Basically ignition stays halway on giving power to accessories thus draining the battery.
As well as Idle after starting for a minute is really weird as well right after changin abs unit so i guess it has something to do with it not knowing how fast its going? RPM goes up to like 1300 and drops down to around 600 constantly for a minute, keep in mind it started happening only after replacing module.

If anyone has any idea whats going wrong if i just got unlucky with used abs module or im missing something would be amazing, ill attach a picture or stored fault codes on ISTA that are currently present down below.

Fault codes currently present: 93FB, CDAD, A0B5, 5D90, 5DA0, 5D80, 5DB2
Attachment 1

[raivis]

Solved: Was just unlucky and had bought bad ABS Module