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e61 car thinks it has active cruise control
03-02-2022, 13:51 PM,
Post: #1
e61 car thinks it has active cruise control
Hello all

maybe someone can help me. Have customer which came with error - 45F8 - message (torque acc, 0xb7) defective, receiver dde, transmitter ACC/LDM

issue is car have ordinary CC, nothing like ACC (b510677). all parts looks ordinary, no other vin in list of units, all units flashed in 2008 last except DDE and CCC. CCC as Headunit cannot have any issues iwth it, and was repaired. So as first i try to recode whole car with VO $540 which was in list correctly saved. Nothing changed, so as next step i try to flash DDE. from UIF 7802544 to 7811481 (btw i have same UIF number, also with basic CC).

As next step, i want to flash whole car with istaP to newest istep, which i hope will solve this, but customer is quite away from me, so i want to have some backup plan if this wont solve the issue.
03-02-2022, 17:56 PM,
Post: #2
RE: e61 car thinks it has active cruise control
Is car from factory ACC?
Will normal CC work?
There are instructions how to turn from ACC to CC, adaptions from DME(DDE) must carried out.
03-02-2022, 19:38 PM,
Post: #3
RE: e61 car thinks it has active cruise control
nope, car never had acc, normal cc from factory
03-02-2022, 19:59 PM,
Post: #4
RE: e61 car thinks it has active cruise control
what is your customers concern? Is there a check control message on the dash saying Active Cruise Control malfunction?


04-02-2022, 07:37 AM,
Post: #5
RE: e61 car thinks it has active cruise control
no check control message, it only don't work, istaD says, there is no message from LDM to DDE (but car never had LDM as it has no ACC or dynamic cruise control)
04-02-2022, 08:40 AM,
Post: #6
RE: e61 car thinks it has active cruise control
As You wrote Ista/P whole car. Force all modules execpt ccc mulf etc
04-02-2022, 10:20 AM, (This post was last modified: 04-02-2022, 10:22 AM by SkeYT.)
Post: #7
XZBMW  RE: e61 car thinks it has active cruise control
(03-02-2022, 13:51 PM)jararak Wrote:  Hello all

maybe someone can help me. Have customer which came with error - 45F8 - message (torque acc, 0xb7) defective, receiver dde, transmitter ACC/LDM

issue is car have ordinary CC, nothing like ACC (b510677). all parts looks ordinary, no other vin in list of units, all units flashed in 2008 last except DDE and CCC. CCC as Headunit cannot have any issues iwth it, and was repaired. So as first i try to recode whole car with VO $540 which was in list correctly saved. Nothing changed, so as next step i try to flash DDE. from UIF 7802544 to 7811481 (btw i have same UIF number, also with basic CC).

As next step, i want to flash whole car with istaP to newest istep, which i hope will solve this, but customer is quite away from me, so i want to have some backup plan if this wont solve the issue.

In DDE with Tool32 do LOESCHEN_KLI_FGR_VARIANTE and after that LOESCHEN_DCC_VARIANTE (if present). After that disconect all equipment and remove key. Close car with key and wait for car deep sleep (min 30 minutes when is E60/61)


BMW Swap Garage & Service
04-02-2022, 19:02 PM,
Post: #8
RE: e61 car thinks it has active cruise control
did you reset adaptations for dde?


04-02-2022, 20:03 PM,
Post: #9
RE: e61 car thinks it has active cruise control
thanks both for very interesting hints


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