- BMW 5 Series E39, 7 Series E38, 8 Series E31 . . 95-Current
- Jaguar XK8 (X100) . . . . . . . . . . . . . . . . . . . . . . . . . . 96-Current
- Jaguar XJ8 (X300) . . . . . . . . . . . . . . . . . . . . . . . . . . . 97-Current
- Audi A8 (All-wheel-drive 5HP-24A) . . . . . . . . . . . 96-Current
This transmission is manufactured in Germany by ZF and carries the BMW designation A5S 440Z.
The A5S 440Z is an electronically controlled five-speed automatic transmission with a lockup-clutch-type torque converter. Three planetary gear sets (Wilson Gearing), three rotating multiple-disc clutches, three multiple-disc brake clutches and one sprag clutch (freewheel) are used to provide the five forward speeds and reverse.
When the transmission control module detects a system fault that would impair normal reliable operation, it interrupts the power supply to pin 12 at the transmission-case connector. The transmission control module also alerts the driver of any faults by signaling the vehicle’s “check control” system. To enable the vehicle to be driven to a repair shop, the following manual gear selections are permitted:
- Selector-lever position . . . . . . . . . . . . . . .P R N D 4 3 2
- Actual gear obtained . . . . . . . . . . . . . . . . .P R N 5 5 5 5
Solenoid identification, location, operation and electrical information from the computer or the case connector are provided in this issue of Tech/Talk to assist you in diagnosing them.
April 2005 Issue
Volume 22, No. 4
- The ZF-5HP-24: Preliminary Information
