Auto Hold Hill Start Assist Retrofit Kit For Audi A4 B9 A5 Q5 Q7 4M
Many Audi A4 B9, A5 F5, Q5 FY, and Q7 4M models are equipped with an electronic parking brake but do not include the Auto Hold function due to different factory configurations.
This Audi Auto Hold Retrofit Kit allows you to add the original-style Auto Hold and Hill Start Assist function without replacing the existing braking system. The kit includes an OEM-style Auto Hold switch and dedicated wiring harness, enabling integration with the vehicle’s electronic brake system.
After installation and professional coding, the Auto Hold system automatically maintains brake pressure when the vehicle comes to a complete stop. The driver can release the brake pedal during traffic lights, congestion, or temporary stops while the vehicle remains securely held.
This upgrade is ideal for daily driving, especially in urban environments and areas with frequent stop-and-go traffic. It provides a more comfortable and convenient driving experience while maintaining the original Audi interior appearance and operating logic.
Features
OEM Style Auto Hold Function
Add the factory-style Auto Hold feature to your Audi. The system works together with the original electronic parking brake and provides a seamless OEM upgrade experience.
Automatic Brake Holding
When the vehicle stops completely, Auto Hold automatically keeps the brake applied, allowing the driver to remove their foot from the brake pedal.
Hill Start Assist Function
The system helps prevent the vehicle from rolling backward when starting on slopes, making uphill starts smoother and safer.
Improved Driving Comfort
Reduce foot fatigue during traffic jams, long waits at intersections, and daily commuting.
Factory Appearance Installation
The Auto Hold switch is designed to match Audi’s original interior style, keeping the cabin clean and professional.
Stable Electronic Integration
Designed specifically for Audi platforms using electronic parking brake systems, providing reliable operation after correct installation and coding.
Compatibility Table：
For 2016-2025 Audi A4 Allroad Avast
For 2017-2025 Audi A5
For 2018-2025 Audi Q5
For 2016-2019 Audi Q7 4M
Packaging content:
1 * Automatic hold switch
1 * Wire harness
Installation and Coding
After installation, the vehicle requires appropriate coding and configuration.
Professional installation using compatible Audi diagnostic equipment is strongly recommended.
Suitable diagnostic equipment may include:
- ODIS
- VAS 5054A
- VAS 6154A
- Compatible DoIP diagnostic equipment
Why Upgrade？
Add Missing Factory Auto Hold Function
Many Audi models include electronic parking brake systems but do not have Auto Hold activated from the factory. This retrofit allows you to add this useful convenience feature.
Improve Daily Driving Experience
Auto Hold reduces the need to continuously press the brake pedal during traffic stops, making driving more relaxed and comfortable.
Enhance Safety During Hill Starts
The Hill Start Assist function helps maintain brake pressure when starting on inclines, reducing the risk of vehicle rollback.
Maintain OEM Appearance
Unlike universal aftermarket solutions, this retrofit uses an Audi-style switch and integrated wiring solution for a factory-like appearance.
Increase Vehicle Value and Functionality
Adding Auto Hold improves vehicle practicality and brings your Audi closer to higher-spec factory configurations.
FAQ：
Q1:Does this Auto Hold retrofit kit fit Audi A4 B9 and A5 F5?
Yes. This kit is designed for Audi A4 B9, A5 F5, Q5 FY, and Q7 4M models equipped with compatible electronic parking brake systems.
Q2:Is coding required after installation?
Yes. Coding is required after hardware installation to activate the Auto Hold function. Professional diagnostic tools such as ODIS, VCDS, or OBDeleven are recommended.
Q3:Does this modify the original brake system?
No. This retrofit does not replace the original braking system. It adds the Auto Hold function while working with the existing electronic parking brake system.
Q4:Can I install this kit myself?
The hardware installation can be completed by experienced retrofit installers. However, coding requires Audi diagnostic knowledge and suitable equipment.
Q5:Does Auto Hold work automatically after every startup?
The operation follows Audi factory logic. Depending on vehicle configuration and coding, some vehicles may require pressing the Auto Hold button after startup.
Q6:Is this an original Audi Auto Hold kit?
This is an OEM-style retrofit solution designed specifically for Audi vehicles, providing factory-like functionality and appearance.
Q7:Should I provide my VIN before ordering?
Yes. Audi vehicles vary by production year and configuration. Providing your VIN helps confirm compatibility and avoid installation issues.
Technical specifications:
Volkswagen and Audi Parts Protection and Coding Notice:
For some Volkswagen and Audi control modules, component protection (CP) and coding need to be removed after installation.
Removing component protection (CP) and encoding involves advanced online authorization and firmware /EEPROM write procedures, which must be performed using the official factory diagnostic system.
By purchasing this product, the customer explicitly acknowledges and agrees:
1. Removing component protection (CP) and encoding poses irreversible risks.
2. Incorrect programs, software mismatch, unstable voltage, session interruption or unauthorized tools may all cause the module to fail to be recognized, resulting in communication interruption or the module being unusable.
3. The Seller shall not be held responsible for any damage, malfunction, loss of communication or failure resulting from the removal of component protection (CP), coding, programming or vehicle system adaptation by the customer or any third party (including Audi dealers, workshops, modifiers or mechanics).
4. Any malfunction that occurs after the removal of component protection (CP) and coding is regarded as third-party technical damage after delivery and does not constitute a manufacturing defect. It does not meet the conditions for return, refund or replacement.
5. Special Note: If the customer requests the seller to remotely flash data and code for product coding and to remove component protection, please contact in advance. The remote cost will be calculated separately (the seller is responsible for any damage caused by this remote flashing of data and code).
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