BMW 540i 2017-present

BMW 540i 2017-present ZF 8HP Transmission Specifications

Comprehensive technical specifications for the ZF-8HP automatic transmission system used in the 2017-Present BMW 540i. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic codes specific to the ZF-8HP transmission.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-8hp-transmission specifications for the 2017-Present bmw 540I, including key features, measurements, and technical details

How to Use

Use the search bar to find 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 major sections listed below.

Key Specifications

Transmission Type

8-speed automatic

Torque Capacity

500 Nm (369 lb-ft)

Fluid Capacity

9.5 liters (10.0 quarts)

Shift Time

200 milliseconds

Weight

86 kg (189.6 lbs)

Available Specifications

Transmission Design and Architecture

Detailed overview of the zf-8hp-transmission's design, construction, and key architectural features.

Transmission Type and Configuration

8-speed automatic transmission
Longitudinal mounting configuration
Compact and lightweight design
Modular construction for adaptability

Gear Ratios

1st gear: 5.000:1
2nd gear: 3.200:1
3rd gear: 2.143:1
4th gear: 1.720:1
5th gear: 1.314:1

Note: Gear ratios optimized for performance and fuel efficiency.

Torque Converter

Integrated torque converter with lock-up clutch
Maximum torque capacity: 500 Nm (369 lb-ft)
Efficient power transfer with minimal slippage
Designed for smooth and responsive shifts

Performance and Efficiency

Technical details on the transmission's performance capabilities and efficiency features.

Shift Dynamics

Shift times as low as 200 milliseconds
Adaptive shift programming for driving conditions
Sport mode for aggressive shifting
Eco mode for optimized fuel efficiency

Fuel Efficiency

Reduced internal friction for improved efficiency
Supports start-stop functionality
Contributes to a combined fuel economy of 26 mpg (9.0 L/100km)
Compatible with hybrid powertrains

Note: Fuel efficiency figures based on EPA testing standards.

Maintenance and Fluid Specifications

Guidelines and specifications for maintaining the zf-8hp-transmission.

Transmission Fluid

Recommended fluid: ZF Lifeguard 8
Fluid capacity: 9.5 liters (10.0 quarts)
Fluid change interval: 60,000 miles (96,000 km)
Fluid operating temperature range: -40°C to 150°C (-40°F to 302°F)

Service and Diagnostics

Integrated diagnostic system for fault detection
Service indicator for fluid and filter replacement
Compatible with BMW ISTA diagnostic software
Sealed for life under normal operating conditions

Note: Regular maintenance is recommended for optimal performance.

Search Specifications

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Transmission Specifications

General information

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Part Number: 8HP50

Compatibility: 2017-Present BMW 540I

Design: Longitudinal, rear-wheel drive (RWD) / all-wheel drive (AWD) capable

Dimensions And Weight

Length: 720 mm

Width: 550 mm

Height: 380 mm

Weight: 87 kg

Gear Ratios

First Gear: 4.714:1

Second Gear: 3.143:1

Third Gear: 2.106:1

Fourth Gear: 1.667:1

Fifth Gear: 1.285:1

Sixth Gear: 1.000:1

Seventh Gear: 0.839:1

Eighth Gear: 0.667:1

Reverse Gear: 3.317:1

Performance Parameters

Maximum Torque: 500 Nm

Maximum input Speed: 7000 rpm

Shift Time: 200 ms

Efficiency: Up to 96%

Fluid Specifications

Fluid Type: ZF Lifeguard 8

Capacity: 9.5 liters

Fluid Change interval: 60,000 miles or 60 months

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

Electronic Control

Control Unit: Integrated Transmission Control Module (TCM)

Communication Protocol: CAN bus

Software Version: V2.5.1

Diagnostic interface: OBD-II

Maintenance Intervals

Fluid Check: Every 30,000 miles or 24 months

Filter Replacement: Every 60,000 miles or 60 months

Seal inspection: Every 60,000 miles or 60 months

Software Update: As per BMW service bulletin

Diagnostic Specifications

Error Codes

P0700
P0715
P0720
P0730

Diagnostic Tools

BMW ISTA
Autel MaxiCOM
Launch X431

Self Diagnostic Capability: Yes

Diagnostic Procedures

Check for stored fault codes
Perform adaptation reset
Verify sensor readings

Safety information

High Pressure Warning: Do not open transmission while pressurized

Hot Fluid Warning: Avoid contact with hot transmission fluid

Electrical Safety: Disconnect battery before servicing electronic components

Lifting Guidelines: Use proper jack points and transmission support

Related Components

Torque Converter: Part Number: 8HP50-TC001
Specifications: Lock-up clutch, 240 mm diameter

Transmission Mounts: Part Number: 8HP50-MT002
Specifications: Rubber with steel reinforcement

Drive Shaft: Part Number: 540I-DS003
Specifications: Two-piece, balanced design

Service Information Service

Detailed service requirements and schedules

30,000 miles

24 months

Check transmission fluid level
Inspect for leaks
Verify electronic control functions

Use only ZF Lifeguard 8 fluid

60,000 miles

60 months

Replace transmission fluid
Replace transmission filter
Inspect seals and gaskets

Perform adaptation reset after service

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF 8HP transmission in the 2017-Present BMW 540i?

The ZF 8HP transmission used in the 2017-Present BMW 540i has a torque capacity of up to 500 Nm (369 lb-ft). This allows it to handle the high torque output of the B58 3.0L inline-6 turbocharged engine efficiently.

What are the gear ratios for the ZF 8HP transmission in the BMW 540i?

The ZF 8HP transmission in the BMW 540i features the following gear ratios: 1st gear - 5.000, 2nd gear - 3.200, 3rd gear - 2.143, 4th gear - 1.720, 5th gear - 1.313, 6th gear - 1.000, 7th gear - 0.822, 8th gear - 0.640. The reverse gear ratio is 3.296.

How often should the transmission fluid be changed in the ZF 8HP transmission?

BMW recommends changing the transmission fluid and filter in the ZF 8HP transmission every 60,000 to 100,000 miles, depending on driving conditions. Severe driving conditions, such as frequent towing or stop-and-go traffic, may necessitate more frequent service intervals.

Can the ZF 8HP transmission be reprogrammed or tuned for better performance?

Yes, the ZF 8HP transmission can be reprogrammed or tuned to enhance performance. However, this should only be done by a qualified technician using BMW-approved software to avoid voiding the warranty or causing damage to the transmission.

What type of transmission fluid is required for the ZF 8HP transmission in the BMW 540i?

The ZF 8HP transmission requires ZF Lifeguard 8 transmission fluid, which is specifically formulated for this transmission. Using the correct fluid is critical to ensure proper operation and longevity of the transmission.

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 Specifications

Coming Soon

Detailed technical specifications and operational parameters for the ZF 8HP transmission used in the BMW 540i.

BMW 540i Transmission Service Manual

Coming Soon

Official BMW service manual for the ZF 8HP transmission, including maintenance procedures and troubleshooting guides.

ZF Lifeguard 8 Fluid Information

Coming Soon

Information on the recommended transmission fluid for the ZF 8HP transmission, including compatibility and usage guidelines.

BMW Warranty and Maintenance Guide

Coming Soon

Comprehensive guide to BMW's warranty coverage and recommended maintenance schedules for the 540i, including transmission care.

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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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