BMW Z4 2009-2016

BMW Z4 2009-2016 ZF 8HP Transmission Specifications

Detailed technical specifications for the ZF-8HP automatic transmission used in the 2009-2016 BMW Z4. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic procedures specific to the ZF-8HP transmission system.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-8hp-transmission specifications for the 2009-2016 bmw Z4, including key features, measurements, and technical details

How to Use

Use the search function to locate specific zf-8hp-transmission specifications by entering keywords such as 'torque capacity', 'gear ratios', or 'fluid capacity'.

Navigate through the documentation sections using the table of contents or by scrolling through the document. Each major section is labeled with a title and contains subsections for detailed information.

Key Specifications

Transmission Weight

87 kg (191.8 lbs)

Maximum Torque Capacity

500 Nm (368.8 lb-ft)

Fluid Capacity

9.5 liters (10.0 quarts)

Gear Ratios

8 forward, 1 reverse

Fluid Operating Temperature

-40°C to 150°C (-40°F to 302°F)

Available Specifications

Transmission Design and Architecture

Details about the design, architecture, and key components of the zf-8hp-transmission

Transmission Layout

8-speed automatic transmission with planetary gear sets
Compact and lightweight design, weighing approximately 87 kg (191.8 lbs)
Integrated torque converter with lock-up clutch
Electronically controlled hydraulic system for precise shifting

Key Components

Four planetary gear sets for efficient power distribution
Five multi-plate clutches for smooth gear transitions
High-strength aluminum housing for durability
Integrated mechatronic module for control and diagnostics

Note: The mechatronic module includes sensors and actuators for real-time monitoring and adjustment.

Performance Specifications

Technical specifications related to the performance and capabilities of the zf-8hp-transmission

Torque and Power Handling

Maximum torque capacity of 500 Nm (368.8 lb-ft)
Designed for engines with up to 300 kW (402 hp)
Optimized for high-performance driving and fuel efficiency
Supports start-stop functionality for reduced emissions

Gear Ratios

1st gear ratio: 4.714:1
2nd gear ratio: 3.143:1
3rd gear ratio: 2.106:1
4th gear ratio: 1.667:1
5th gear ratio: 1.285:1
6th gear ratio: 1.000:1
7th gear ratio: 0.839:1
8th gear ratio: 0.667:1
Reverse gear ratio: 3.317:1

Note: Wide gear ratio spread ensures optimal performance across various driving conditions.

Maintenance and Fluid Specifications

Information on maintenance requirements and fluid specifications for the zf-8hp-transmission

Fluid Capacity and Type

Total fluid capacity: 9.5 liters (10.0 quarts)
Recommended fluid: ZF Lifeguard 8 transmission fluid
Fluid change interval: 80,000 km (50,000 miles) or as per manufacturer guidelines
Fluid operating temperature range: -40°C to 150°C (-40°F to 302°F)

Maintenance Procedures

Regular inspection of fluid levels and condition
Replacement of transmission filter during fluid changes
Diagnostic scans using BMW-specific tools for error codes
Periodic calibration of the mechatronic module

Note: Use only manufacturer-approved fluids and tools to ensure proper operation and warranty compliance.

Electronics and Control Systems

Details about the electronic control systems and integration with the vehicle

Control Module Features

Integrated mechatronic module with 32-bit processor
Adaptive shift strategy for personalized driving experience
Supports BMW's Driving Dynamics Control system
Real-time diagnostics and fault logging

Integration with Vehicle Systems

Seamless communication with the Engine Control Unit (ECU)
Integration with BMW's iDrive system for driver feedback
Supports paddle shifters for manual gear selection
Compatible with BMW's xDrive all-wheel-drive system

Note: The transmission adapts to driving conditions and driver behavior for optimal performance.

Search Specifications

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Transmission Specifications

General information

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 8HP

Applicable Years: 2009-2016

Vehicle Model: BMW Z4

Part Number: 8HP45 (varies by model year)

Dimensions And Weight

Length: 720 mm

Width: 550 mm

Height: 380 mm

Weight: 87 kg (dry)

Fluid Capacity: 9.5 liters

Gear Ratios

1st Gear: 4.714

2nd Gear: 3.143

3rd Gear: 2.106

4th Gear: 1.667

5th Gear: 1.285

6th Gear: 1.000

7th Gear: 0.839

8th Gear: 0.667

Reverse Gear: 3.317

Torque Capacity

Maximum input Torque: 450 Nm

Maximum Output Torque: 600 Nm

Torque Converter Lockup: Yes, with slip control

Operational Parameters

Maximum Engine Speed: 7000 rpm

Shift Response Time: 200 ms

Operating Temperature Range: -40°C to 150°C

Fluid Type: ZF Lifeguard 8

Fluid Viscosity: 6.8 cSt at 100°C

Electronic Controls

Control Unit: Integrated Transmission Control Unit (TCU)

Communication Protocol: CAN bus

Adaptive Shift Strategy: Yes

Sport Mode: Yes

Manual Mode: Yes, with paddle shifters

Maintenance Specifications

Fluid Change interval: 60,000 miles or 48 months

Filter Change interval: 60,000 miles or 48 months

Seal inspection Interval: 100,000 miles

Pan Gasket Replacement: Recommended at fluid change

Torque Converter Service: Inspect at 100,000 miles

Diagnostic Specifications

Diagnostic Tool: BMW ISTA/D or compatible

Fault Codes: Supports OBD-II and manufacturer-specific codes

Self Diagnosis: Yes, with stored fault memory

Sensor Monitoring

Input speed sensor
Output speed sensor
Fluid temperature sensor
Pressure sensors

Tolerances And Limits

Gear Mesh Tolerance: 0.05 mm

Clutch Pack Clearance: 0.8-1.2 mm

Fluid Pressure Range: 2.5-4.5 bar

Shift Solenoid Resistance: 5-10 ohms

Safety information

High Temperature Warning: Avoid prolonged operation above 150°C

Fluid Handling: Use gloves and eye protection

Electrical Safety: Disconnect battery before servicing

Lifting Instructions: Use transmission jack for removal

Service Information Service

Detailed service requirements and schedules for the ZF 8HP transmission in the 2009-2016 BMW Z4

30,000

Inspect transmission fluid level
Check for leaks
Verify shift quality

Early inspection recommended for high-performance use

60,000

Replace transmission fluid
Replace transmission filter
Inspect seals and gaskets

Use only ZF Lifeguard 8 fluid

100,000

Inspect torque converter
Check clutch pack clearance
Perform full diagnostic scan

Consider replacing pan gasket and seals

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF-8HP transmission in the 2009-2016 BMW Z4?

The ZF-8HP transmission used in the 2009-2016 BMW Z4 has a torque capacity of up to 500 Nm (369 lb-ft). This ensures compatibility with the high-performance engines in the Z4 lineup, including the N20, N52, and N54/N55 engines.

How many gears does the ZF-8HP transmission have?

The ZF-8HP transmission is an 8-speed automatic transmission. It provides smooth and efficient gear shifts, optimizing both performance and fuel economy.

What type of transmission fluid is recommended for the ZF-8HP in the BMW Z4?

BMW recommends using ZF Lifeguard 8 transmission fluid for the ZF-8HP transmission. The fluid capacity is approximately 9.5 liters (10 quarts) for a complete fluid change, including the torque converter.

What is the service interval for the ZF-8HP transmission in the BMW Z4?

BMW does not specify a fixed service interval for the ZF-8HP transmission under normal driving conditions. However, it is generally recommended to inspect and replace the transmission fluid and filter every 60,000 to 100,000 miles, depending on driving habits and conditions.

Can the ZF-8HP transmission be reprogrammed or updated?

Yes, the ZF-8HP transmission can be reprogrammed or updated using BMW's ISTA diagnostic software. Updates may improve shift quality, performance, and compatibility with newer engine software versions.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

ZF-8HP Transmission Technical Manual

Coming Soon

Official technical documentation from ZF for the 8HP transmission, including detailed specifications, maintenance procedures, and troubleshooting guides.

BMW Z4 Service Manual

Coming Soon

Comprehensive service manual for the 2009-2016 BMW Z4, covering transmission service, fluid replacement, and diagnostic procedures.

ZF Lifeguard 8 Fluid Specifications

Coming Soon

Detailed information on ZF Lifeguard 8 transmission fluid, including compatibility, performance characteristics, and usage guidelines.

BMW ISTA Diagnostic Software Guide

Coming Soon

Step-by-step guide for using BMW's ISTA diagnostic software to update or reprogram the ZF-8HP transmission.

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Technical Information

All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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