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What are the symptoms when the Audi J518 fails?

1Answers
ElleLynn
07/24/2025, 06:44:16 AM

The key can be turned, but the dashboard does not light up, and the steering column lock cannot be unlocked. Below are the specific details: 1. Internal CPU damage: Prolonged use and issues with the CPU's manufacturing materials can sometimes cause it to malfunction. The CPU can be replaced. 2. Internal relay: Frequent operation of the relay can cause oxidation of the contacts, leading to poor contact. The relay should be replaced with a new one. 3. Recommended solution: For a more reliable fix, replace both the CPU and the relay to avoid future issues. Additionally, components like the micro switch and motor, as well as small resistors near the CPU pins, may change value due to excessive temperature when using a heat gun or soldering iron during disassembly or soldering.

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