

This Keyfirst compatible key for Audi A4™ (2 buttons, non remote control) is designed for garages, car centers and diagnostic professionals who need a reliable, proven solution that is easy to program via the OBD port. It replicates the technical characteristics of the original references while ensuring high compatibility and fast workshop setup.
This key is pre-coded by us before shipment. The associated file is valid for approximately 5 days after generation. Code generation is available with the KEYTOOL MAX from XHORSE or the KD-MAX from KEYDIY.
By choosing Keyfirst for your keys, you benefit from 24h/48h shipping, volume discounts, a rigorous quality process, responsive customer service, and dedicated technical support to secure your operations.
Compatible with standard programming tools and diagnostic devices on the market. Keyfirst is the official distributor of major manufacturers in the sector, including: ABRITES, AN-SAN, AUTEL, IEA-ZEDFULL, KEYDIY, KEYLINE, KUKAI, LAUNCH, LISHI, LONSDOR, OBDSTAR, SILCA and XHORSE. All products are translated into English by our technical team for optimal use.
Number of buttons | 2 |
Type | Non remote control |
Transponder | ID48 (included) |
PCF reference | — |
Frequency | 433.920 MHz |
Battery | CR2032 (included) |
Blade | HU66 (included) |
Pre-coding | Yes (done by Keyfirst, valid ~5 days) |
Immobilizer programming | Via OBD port |
Remote central locking programming | Via OBD port |
Original reference (OEM) | 4D0 837 231 R |
EAN | 3700872206773 |
Note: Make sure to choose the right blade and transponder according to the vehicle and year.
Do you have a diagnostic tool (purchased from Keyfirst or elsewhere)? Our experts can assist you step by step in programming your compatible keys.
A Keyfirst technician guides you step by step, from vehicle identification to final programming.
Find all our exclusive tutorials, programming demonstrations and technical advice directly on our official YouTube channel:
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The trademarks mentioned ™ are the exclusive property of their respective owners. They are used solely to indicate the compatibility of the products offered by KEYFIRST SAS. KEYFIRST SAS is neither affiliated with nor approved by these brands. Our products are adaptable alternatives, without manufacturer logos, in compliance with European legislation on intellectual property and the fight against counterfeiting. No ownership or license rights are claimed on these trademarks.
Data sheet
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