In this article, we will walk through the process of adding a new key to a 2019 Volkswagen Tiguan (MQB platform). The original key was ordered but had not yet arrived, so the technician decided to extract the necessary data from the instrument cluster to program a new key. Additionally, the customer requested an extra non-original (Chinese) key as a backup.
Step 1: Removing the Instrument Cluster
The first step involved removing the instrument cluster (dashboard panel). Here’s how it was done:
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Disassembly – The panel is held in place by clips and two Torx screws. Carefully removed the clips and unscrewed the panel.
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Opening the Cluster – Once removed, the cluster was opened to access the internal components. Inside, a TMS70F35 chip was identified, which stores key-related data.
Cluster number: 5NA.920.891.C
Processor: D70F3539
Step 2: Extracting Key Data
To program a new key, we need to read the immobilizer data from cluster. This involved:
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Soldering Connections – Solder wires to the instrument cluster’s circuit board to establish a connection for data extraction.
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Reading the Data – Using Autel IM608 and APB131 adapter, the immobilizer data was read. This process took approximately 15 minutes.
Step 3: Programming the New Key
Once the data was extracted, the next step was programming:
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Original Key Preparation – The original key (when it arrived) would be programmed using the extracted data.
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Adding a Chinese Key (here use Xhorse XM38) – The customer requested an additional non-original key. The technician prepared it as a “dealer key” and programmed it into the system.
Key Calibration Process
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The car’s system recognized two existing keys.
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The new (Chinese) key was successfully calibrated and tested.
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Both the original and the new key worked, though the Chinese key lacked remote start functionality, which the customer deemed unnecessary.
Conclusion
The process of adding a key to a 2019 Volkswagen Tiguan involves:
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Removing and accessing the instrument cluster.
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Extracting immobilizer data via soldering and software.
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Programming new keys (original or aftermarket).
Final Notes
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Original vs. Aftermarket Keys – Original keys offer full functionality, while aftermarket keys may lack features like remote start.
