BMW fault code CD37
Active cruise control
In the active cruise control, code CD37 means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
ACC2: Conversion, specified acceleration value
Module version: Active cruise control (ACC2)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
ACC: Conversion, set point deceleration value
Module version: Active cruise control (ACC_E65)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Reading and clearing it
Fault code CD37 is a BMW code, stored in the car's active cruise control, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The active cruise control is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67), X5 (E70), X6 (E71), X6 (E72), Z4 (E85), 1 Series (E87), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)
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