What does the anti-theft authentication failure of Haval H6 mean?

3 Answers
DiLillian
07/29/25 4:44am
Haval H6 anti-theft authentication failure means that the car battery is low on power. Reasons for engine anti-theft authentication failure: First, it could be due to a mismatch between the remote key and the engine computer. There are many specific reasons for this: for example, electromagnetic interference nearby, large power equipment nearby, or being in a very open area, etc. Second, the front windshield film may have gotten wet (a very common reason), and water can flow into the central control unit along the glass. When applying the film, it is essential to remind the technician to be careful, and it is best to place a towel on the dashboard. The function of the engine immobilizer system: For cars equipped with an engine immobilizer system, even if a thief can open the door, they cannot drive the car away. A typical engine immobilizer system works as follows: the car ignition key contains an electronic chip, and each chip has a fixed ID (equivalent to an identification number). The car can only start if the ID of the key chip matches the ID on the engine side. Conversely, if they do not match, the car will immediately cut off the circuit automatically, preventing the engine from starting.
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William
08/12/25 5:31pm
I've been driving a Haval H6 for a long time. 'Anti-theft authentication failure' means the system didn't recognize your key when starting the vehicle, which is quite common. It's likely that the key battery is running low - try replacing the coin cell battery and it should work. Another possibility is that the key is too far from the sensing area, or there's strong signal interference from nearby devices affecting communication. From my personal experience, I once forgot to change the battery after keeping the key in my pocket for too long, resulting in authentication failure during startup. After replacing the battery myself, it returned to normal. If the problem persists, consider an anti-theft module malfunction - Haval vehicles occasionally have software bugs that can be fixed by visiting a 4S store for an update. The key is to address this promptly as it involves safety - inability to start the vehicle normally affects daily use, and breaking down in remote areas would be even more troublesome.
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LeAlan
10/03/25 4:05am
My neighbor's Haval H6 also experienced an anti-theft authentication failure, meaning the key and the car couldn't communicate, preventing the car from starting. The specific reasons can vary, such as the key battery being dead, the chip being damaged, or attempting to use a non-original key. Last time, my neighbor's key got wet, causing signal failure, and simply air-drying it for a few days fixed the issue at a very low cost. It's recommended to check the key's condition during every maintenance session to avoid battery depletion from prolonged disuse. If it's a software issue, try restarting the vehicle's system or disconnecting the battery cables for a few minutes. In short, don't panic—most situations can be handled DIY. If not, consult a professional technician to scan for fault codes. The anti-theft feature is designed to protect the car, so don't take it lightly.
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