Originally Posted by Maruzo (Post 1194855)

One thing about the PDC on the E53 is they always seem to be going off in the parking lot, or whenever you start up your car.

I would say you're not missing much by not having it. It's not very accurate.

I would strongly recommend getting the rear view camera option if you have the oem nav screen.

I've done it and it makes all the difference backup the big truck.

Originally Posted by Effduration (Post 1194855)

Make sure you have all of it, including the long reinforcement bar inside the bumper as well as the piston supports that get inserted into the back of the X5.

I see a lot of OEM hitches for sale that are missing these pieces, and they are nearly impossible to find individually.

Originally Posted by Clavurion (Post 1194842)

Newer vehicles have FA list with direct list of additional equipment. E53 has the older style ZCS which consists of three bit strings (GM, SA, VN). In this case you have to add those previously mentioned bits to your ZCS SA string. You have to add those values to what ever value that bit has. If the sum goes above 10, 10=A, 11=B, 12=C, etc.

Like always start by choosing the profile and read ZCS on either module holding it. I would save the original ZCS somewhere before making any changes.

- After reading ZCS press F1 (Enter ZCS)
- Make changes to ZCS, remove last check digits and check “Calculate check sum”
- F6 (Back)
- F4 (Process ECU)
- Choose propriate control unit (EWS and IKE/KMB hold ZCS), then OK
- F2 job -> ZCS_SCHREIBEN (=Write ZCS)
- F3 (execute job)

Now you have the new ZCS saved code all modules (CODE CAR). Alternatively code (SG_CODIEREN) only LCM, PDC and AHM which in this case are the only modules which have any parameters regarding those added options.

Originally Posted by Maruzo (Post 1194855)

One thing about the PDC on the E53 is they always seem to be going off in the parking lot, or whenever you start up your car.

I would say you're not missing much by not having it. It's not very accurate.

...

Originally Posted by bbaxter18 (Post 1194875)

So, i got a chance to check, and after a bit more digging i think i figured it out. So my original values were:
gm 81530080w
sa 2029801100856a0ff
vn 0000007ab72

I then removed the last digit of each line:
gm 81530080
sa 2029801100856a0f
vn 0000007ab7

Then Summed the Bits you mentioned previously:
gm 81530080
sa 202982110085Ea0f
vn 0000007ab7

Selected calculate Checksum and OK, Giving me new values with Check Bits at the end:

GM 81530080W
SA 202982110085EA0F5
VN 0000007AB72

And did not receive and error this time. I didnt realize initially that all 3 lines had a check bit at the end, as does my VIN(FG) which i did not remove during the edit. Does all of that look correct??