Introduced for the 1996 model year, the ZF 5HP24 transmission was a highly advanced 5 speed automatic that allows for adaptive learn shifting (the 5HP24 transmission controller monitors how you’re driving, then adjusts the shift program to suit your driving style), and manual shift mode (i.e. the BMW Steptronic / BMW A5S 440Z). It was installed in a number of cars, including the E38 BMW 7 Series, BMW Z8, Jaguar XJ, and the 2003-2005 Range Rover.
5HP24 Transmission Specifications
The ZF 5HP24 transmission is built in Germany by ZF, and can be found in the E39 BMW 5 Series, E31 BMW 8 Series, E38 BMW 7 Series, X100 Jaguar XJ8, X300 Jaguar XK8, 1997-2003 Audi A8, and 2003-2005 Range Rover. It’s an electronically controlled ZF 5 speed automatic transmission, with a lock up torque converter to improve both efficiency and performance.
The ZF 5HP24 transmission uses three planetary gear assemblies, three rotating clutches, three brake clutches and one sprag clutch. The 5HP24 torque converter defaults in lockup mode, and the pressure control system is used to release the TCC clutch.
ZF 5HP24 Transmission Applications & Compatibility
ZF 5HP24 Transmission Problems
ZF 5HP24 Clutch drum failure
Problem – Hesitation at take off or failure to engage a forward gear can be caused by damage to clutch drum ‘A’, which happens because of a sudden increase in hydraulic pressure.
Solution – In order to solve this very common 5HP24 transmission problem, the clutch drum will have to be replaced, along with the 5HP24 pressure regulator valve and the lower 5HP24 valve body.
Delayed engagement or slipping in reverse
Problem – Another one of the more common 5HP24 transmission problems is difficulty engaging reverse, or the transmission may slip when reverse gear is engaged. Pressure on the gear selector may seem to alleviate the problem. This often occurs on a rebuilt 5HP24 transmission.
Solution – This issue may be caused by loss of pressure to the reverse apply circuit, due to the manual valve coming misaligned to the valve body casting. To fix the problem, the tamperproof bolts and detent spring will have to be adjusted.
Problem – If your vehicle has the 5HP24 transmission, an issue that you may experience has to do with reverse engagement. So don’t be surprised if your vehicle suddenly starts slipping in reverse, or refuses to go into reverse altogether.
Solution – This common ZF5HP24 transmission problem is often caused by a defective F clutch piston, which is responsible for engaging reverse.
5HP24 Transmission Specs
General – 5-speed automatic
Application – RWD/AWD
Variations – 5HP24A – AWD
Production Began – 1996
Weight – 209 – 313 lbs
Fluid Type – ZF Lifeguard A / ZF Lifeguard 5
Capacity – 10.5 – 11.6 qt
5HP24 Transmission Gear Ratios
First – 3.57
Second – 2.20
Third – 1.51
Fourth – 1.00
Fifth – 0.80
Reverse – 4.10