BMW 550i 2003-2010

BMW 550i 2003-2010 ZF 6HP Transmission Specifications

Comprehensive technical specifications for the ZF-6HP automatic transmission system used in the 2003-2010 BMW 550i. This document covers gear ratios, torque converter details, fluid capacity, shift points, and diagnostic codes specific to the ZF-6HP transmission.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-6hp-transmission specifications for the 2003-2010 bmw 550I, including key features, measurements, and technical details

How to Use

Use the search function to locate specific zf-6hp-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 labeled 'Transmission Design', 'Performance Specifications', 'Maintenance Requirements', and 'Troubleshooting'.

Key Specifications

Torque Capacity

750 Nm

Fluid Capacity

9.5 liters

Weight

95 kg

Gear Ratios

4.171:1 to 0.691:1

Operating Temperature

-40°C to 150°C

Available Specifications

Transmission Design

Detailed overview of the zf-6hp-transmission design, including its architecture, components, and engineering features.

Transmission Architecture

6-speed automatic transmission with planetary gear sets
Electronically controlled hydraulic system
Integrated torque converter with lock-up clutch
Compact design with a length of 650 mm and weight of 95 kg

Key Components

Planetary gear sets for smooth gear transitions
High-strength aluminum alloy housing
Electro-hydraulic control unit for precise shifting
Sealed oil pan with a capacity of 9.5 liters

Note: The transmission is designed for longitudinal engine configurations.

Performance Specifications

Technical specifications related to the performance and capabilities of the zf-6hp-transmission.

Torque and Power Handling

Maximum torque capacity of 750 Nm
Designed for engines with up to 450 hp
Optimized for high-performance driving conditions
Efficient power transfer with minimal energy loss

Gear Ratios

1st gear ratio: 4.171:1
2nd gear ratio: 2.340:1
3rd gear ratio: 1.521:1
4th gear ratio: 1.143:1
5th gear ratio: 0.867:1
6th gear ratio: 0.691:1
Reverse gear ratio: 3.403:1

Note: Gear ratios are optimized for both performance and fuel efficiency.

Maintenance Requirements

Guidelines and specifications for maintaining the zf-6hp-transmission to ensure optimal performance and longevity.

Fluid Specifications

Recommended transmission fluid: ZF Lifeguardfluid 6
Fluid capacity: 9.5 liters
Fluid change interval: 60,000 miles or 100,000 km
Fluid operating temperature range: -40°C to 150°C

Service Intervals

Inspect transmission fluid level every 15,000 miles
Replace transmission filter every 60,000 miles
Check for leaks and wear during routine maintenance
Perform software updates as recommended by BMW

Note: Use only manufacturer-approved fluids and parts for maintenance.

Troubleshooting

Common issues and diagnostic procedures for the zf-6hp-transmission.

Common Symptoms

Delayed or harsh shifting
Transmission slipping under load
Unusual noises during gear changes
Transmission warning light on dashboard

Diagnostic Procedures

Use BMW diagnostic software to read fault codes
Check transmission fluid level and condition
Inspect wiring and connectors for damage
Perform road test to verify symptoms

Note: Always refer to the BMW service manual for detailed diagnostic steps.

Search Specifications

Search by specification name, value, or description

Transmission Specifications

General information

Transmission Type: 6-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 6HP19/6HP26

Applicable Models

2003-2010 BMW 550i

Part Number: 24 11 7 561 123

Weight: 85 kg (187.4 lbs)

Fluid Specifications

Fluid Type: ZF Lifeguard 6

Fluid Capacity: 9.5 liters (10.0 quarts)

Fluid Change interval: 60,000 miles or 60 months

Fluid Temperature Range: -40°C to 150°C (-40°F to 302°F)

Fluid Pressure: 3.5-4.5 bar (50.8-65.3 psi)

Gear Ratios

1st Gear: 4.171:1

2nd Gear: 2.340:1

3rd Gear: 1.521:1

4th Gear: 1.143:1

5th Gear: 0.867:1

6th Gear: 0.691:1

Reverse Gear: 3.403:1

Torque Capacity

Maximum input Torque: 450 Nm (331.9 lb-ft)

Maximum Output Torque: 600 Nm (442.5 lb-ft)

Torque Converter Lockup Speed: 1500-2000 rpm

Operational Parameters

Maximum Engine Speed: 7000 rpm

Shift Response Time: 100-200 ms

Operating Temperature Range: -30°C to 120°C (-22°F to 248°F)

Maximum Vehicle Speed: 250 km/h (155 mph)

Mechanical Specifications

input Shaft Diameter: 30 mm (1.18 in)

Output Shaft Diameter: 35 mm (1.38 in)

Clutch Pack Count: 5

Planetary Gear Set Count: 3

Bearing Type: Tapered roller bearings

Electronic Control

Control Module: EGS (Electronic Transmission Control)

Sensor Types

Speed sensor
Temperature sensor
Pressure sensor

Communication Protocol: CAN-BUS

Software Version: EGS52

Maintenance Specifications

Filter Change interval: 60,000 miles or 60 months

Seal Replacement interval: 100,000 miles or 120 months

Pan Gasket Part Number: 24 11 7 561 124

Filter Part Number: 24 11 7 561 125

Diagnostic Specifications

Diagnostic Tool: BMW ISTA/D

Fault Code Readout: OBD-II compliant

Common Fault Codes

P0700
P0715
P0720
P0730

Diagnostic Procedure: Perform full system scan using ISTA/D

Safety information

Warning: Do not operate transmission without proper fluid levels

Caution: Ensure transmission is at operating temperature before performing diagnostics

Note: Use only ZF Lifeguard 6 fluid to avoid damage

Service Information Service

Detailed service requirements and schedules for ZF-6HP transmission

30,000 miles

30 months

Check fluid level and condition
Inspect for leaks
Perform diagnostic scan

Ensure fluid is at operating temperature before checking level

60,000 miles

60 months

Replace transmission fluid
Replace transmission filter
Inspect and replace seals if necessary

Use only ZF Lifeguard 6 fluid for replacement

100,000 miles

120 months

Inspect and replace clutch packs if necessary
Inspect and replace bearings if necessary
Perform full diagnostic scan

Ensure all components are within manufacturer specifications

Common Questions

Find answers to common questions about torque specifications

What is the fluid capacity of the ZF-6HP transmission in a 2003-2010 BMW 550i?

The ZF-6HP transmission in the 2003-2010 BMW 550i has a fluid capacity of approximately 9.5 liters (10 quarts) when performing a complete fluid exchange. Always refer to the manufacturer's specifications for exact measurements.

What type of transmission fluid is recommended for the ZF-6HP transmission?

The ZF-6HP transmission requires ZF Lifeguard 6 or an equivalent ATF meeting BMW specification LT 71141. Using incorrect fluid can lead to transmission damage and void warranties.

How often should the transmission fluid be changed in the ZF-6HP transmission?

BMW recommends a transmission fluid and filter change every 60,000 to 100,000 miles under normal driving conditions. Severe driving conditions may require more frequent service intervals.

What are the common symptoms of a failing ZF-6HP transmission?

Common symptoms include harsh shifting, delayed engagement, slipping gears, transmission warning lights, and fluid leaks. Immediate inspection and service are recommended to prevent further damage.

Can the ZF-6HP transmission be repaired, or does it need to be replaced entirely?

Many issues with the ZF-6HP transmission can be repaired, such as replacing solenoids, valve bodies, or seals. However, severe internal damage may require a complete transmission replacement.

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-6HP Transmission Service Manual

Coming Soon

Official ZF service manual for the 6HP transmission, including detailed repair and maintenance procedures.

BMW 550i Transmission Fluid Replacement Guide

Coming Soon

Step-by-step guide for replacing transmission fluid and filter in the 2003-2010 BMW 550i.

ZF Lifeguard 6 Fluid Specifications

Coming Soon

Technical specifications and compatibility information for ZF Lifeguard 6 transmission fluid.

Common ZF-6HP Transmission Fault Codes

Coming Soon

List of common fault codes and diagnostic procedures for the ZF-6HP transmission.

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Technical Information

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