BMW 435i 2014-2016

BMW 435i 2014-2016 ZF 8HP Transmission Specifications

Comprehensive technical specifications for the ZF-8HP 8-speed automatic transmission used in the 2014-2016 BMW 435I. This document covers gear ratios, torque capacity, fluid specifications, shift logic, and diagnostic codes specific to this transmission model.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the ZF-8HP transmission specifications for the 2014-2016 BMW 435I, 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 major sections. Each section is labeled with a title and contains detailed subsections.

Key Specifications

Maximum Torque Capacity

500 Nm (368.8 lb-ft)

Gear Ratios

1st: 4.714, 8th: 0.667

Fluid Capacity

9.5 liters (10.0 quarts)

Shift Time

200 milliseconds

Weight

87 kg (191.8 lbs)

Available Specifications

Transmission Design and Architecture

This section covers the design, architecture, and key components of the ZF-8HP transmission used in the 2014-2016 BMW 435I.

Transmission Type and Layout

8-speed automatic transmission
Longitudinal layout for rear-wheel-drive (RWD) and all-wheel-drive (AWD) configurations
Compact and lightweight design with a total weight of 87 kg (191.8 lbs)
Modular construction for adaptability across various vehicle platforms

Key Components

Four planetary gear sets for efficient power distribution
Five multi-plate clutches for smooth gear shifts
Integrated torque converter with lock-up clutch for improved efficiency
Electro-hydraulic control unit for precise gear changes

Note: The torque converter lock-up clutch reduces energy losses and improves fuel efficiency.

Performance Specifications

This section provides detailed performance specifications of the ZF-8HP transmission, including torque capacity, gear ratios, and shift times.

Torque Capacity and Gear Ratios

Maximum torque capacity of 500 Nm (368.8 lb-ft)
Gear ratios: 1st - 4.714, 2nd - 3.143, 3rd - 2.106, 4th - 1.667, 5th - 1.285, 6th - 1.000, 7th - 0.839, 8th - 0.667
Reverse gear ratio: 3.317
Wide spread of gear ratios for optimal performance and fuel efficiency

Shift Times and Efficiency

Shift times as low as 200 milliseconds
Reduced internal friction for improved fuel economy
Adaptive shift strategy for dynamic driving conditions
Supports start-stop functionality for enhanced efficiency

Note: The adaptive shift strategy adjusts gear changes based on driving style and road conditions.

Maintenance and Fluid Specifications

This section outlines 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 BMW service schedule
Fluid operating temperature range: -40°C to 150°C (-40°F to 302°F)

Maintenance Procedures

Regular inspection of transmission fluid level and condition
Replacement of transmission filter during fluid changes
Diagnostic scan for fault codes using BMW-specific diagnostic tools
Check for leaks and wear on seals and gaskets

Note: Use only ZF-approved fluids and components to ensure optimal performance and longevity.

Integration with BMW 435I

This section details how the ZF-8HP transmission is integrated into the 2014-2016 BMW 435I, including compatibility and performance enhancements.

Vehicle Compatibility

Designed specifically for the BMW N55 3.0L inline-6 turbocharged engine
Supports both RWD and xDrive AWD configurations
Optimized for BMW's Driving Dynamics Control system
Seamless integration with BMW's iDrive system for transmission diagnostics

Performance Enhancements

Sport mode for faster and more aggressive gear shifts
Launch control functionality for maximum acceleration
Eco Pro mode for improved fuel efficiency
Adaptive transmission mapping for personalized driving experience

Note: Launch control is available only in models equipped with the M Sport package.

Search Specifications

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Transmission Specifications

General information

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 8HP45

Part Number: 24108648809

Compatibility: 2014-2016 BMW 435I

Weight: 87 kg (191.8 lbs)

Dimensions

Length: 600 mm (23.6 in)

Width: 400 mm (15.7 in)

Height: 350 mm (13.8 in)

input Shaft Length: 120 mm (4.7 in)

Output Shaft Length: 150 mm (5.9 in)

Fluid Specifications

Fluid Type: ZF Lifeguard 8

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 Range: 2.5 to 4.5 bar (36.3 to 65.3 psi)

Gear Ratios

1st Gear: 4.714:1

2nd Gear: 3.143:1

3rd Gear: 2.106:1

4th Gear: 1.667:1

5th Gear: 1.285:1

6th Gear: 1.000:1

7th Gear: 0.839:1

8th Gear: 0.667:1

Reverse Gear: 3.317:1

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 rpm

Operational Parameters

Maximum Engine Speed: 7000 rpm

Shift Response Time: 200 ms

Maximum Operating Temperature: 120°C (248°F)

Minimum Operating Temperature: -30°C (-22°F)

Electronic Control

Control Unit: EGS (Electronic Transmission Control)

Sensors

Input speed sensor
Output speed sensor
Transmission fluid temperature sensor
Shift position sensor

Communication Protocol: CAN bus

Software Version: V2.3.1

Maintenance Specifications

Filter Replacement interval: 60,000 miles or 60 months

Seal inspection Interval: 30,000 miles or 30 months

Torque Converter inspection Interval: 100,000 miles or 100 months

Fluid Pan Torque Specification: 10 Nm (7.4 lb-ft)

Diagnostic Specifications

Fault Codes

P0700 - Transmission Control System Malfunction
P0715 - Input/Turbine Speed Sensor Circuit Malfunction
P0720 - Output Speed Sensor Circuit Malfunction
P0730 - Incorrect Gear Ratio

Diagnostic Tool: BMW ISTA/D

Diagnostic interface: OBD-II

Diagnostic Procedure: Perform full system scan and clear fault codes

Safety information

Warning: Do not operate the transmission without proper fluid levels

Caution: Ensure the vehicle is in park before performing maintenance

Note: Use only ZF Lifeguard 8 fluid to avoid damage to the transmission

Service Information Service

Detailed service requirements and schedules for the ZF-8HP transmission

30,000 miles

30 months

Inspect transmission fluid level
Check for leaks
Inspect transmission mounts

Perform visual inspection and top off fluid if necessary

60,000 miles

60 months

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

Use only ZF Lifeguard 8 fluid for replacement

100,000 miles

100 months

Inspect torque converter
Perform full diagnostic scan
Check and adjust shift points if necessary

Ensure all electronic controls are functioning properly

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF 8HP transmission in the 2014-2016 BMW 435i?

The ZF 8HP transmission used in the 2014-2016 BMW 435i has a torque capacity of up to 500 Nm (369 lb-ft). This ensures compatibility with the N55 engine's output and provides smooth and efficient power delivery.

What type of transmission fluid is recommended for the ZF 8HP transmission?

The ZF 8HP transmission requires ZF Lifeguard 8 transmission fluid, part number S671 090 312. This fluid is specifically formulated for optimal performance and longevity of the transmission. Approximately 7-9 liters are needed for a complete fluid change.

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

BMW recommends a transmission fluid and filter change every 60,000 to 100,000 miles (96,000 to 160,000 km) under normal driving conditions. Severe driving conditions, such as frequent towing or stop-and-go traffic, may require more frequent service intervals.

What are the common symptoms of a failing ZF 8HP transmission?

Common symptoms include harsh shifting, delayed engagement, transmission slipping, unusual noises (e.g., whining or grinding), and warning lights such as the transmission fault or check engine light. Immediate professional diagnosis is recommended to prevent further damage.

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, adapt to new driving conditions, or address specific fault codes. Reprogramming should only be performed by a certified technician.

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 manual from ZF detailing specifications, maintenance procedures, and troubleshooting for the 8HP transmission.

BMW N55 Engine and Transmission Compatibility Guide

Coming Soon

A comprehensive guide explaining the compatibility and integration of the N55 engine with the ZF 8HP transmission in BMW vehicles.

ZF Lifeguard 8 Fluid Specifications

Coming Soon

Detailed specifications and usage guidelines for ZF Lifeguard 8 transmission fluid, including compatibility and performance data.

BMW ISTA Diagnostic Software Overview

Coming Soon

An overview of BMW's ISTA diagnostic software, including its use for transmission reprogramming and fault diagnosis.

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