What are the reasons why the Haval H2 suddenly cannot detect the key?
2 Answers
Haval H2 cannot detect the key due to the following reasons: insufficient key battery power, use of a key case leading to weak signal, signal interference, or issues with the key chip. Below are detailed explanations: Insufficient key battery power: The battery used in the remote key is typically a standard button-type battery with a rated working voltage of around 3.3V. Under normal circumstances, its service life can generally reach up to 2 years. Key case causing weak signal: Use of a key case may result in a weak or shielded signal. Signal interference: Placing the key near devices such as mobile phones, laptops, or power converters. Since these radio devices emit wireless signals that can interfere with the smart key, it is advisable to keep the key away from such devices during use. Issues with the key chip: Problems with the key chip can lead to poor signal transmission or no transmission at all.
I recently encountered a situation where my Haval H2 couldn't detect the key. Common causes include a dead key battery, signal interference, or receiver malfunction. Battery depletion after prolonged use is a frequent issue—try replacing it with a new one first. If that doesn't work, internal components might be damaged, perhaps from drops or water exposure. Interference is also common; keep phones or metal objects away. Don't underestimate this issue—it affects locking and starting safety. Regularly check key status and avoid high-voltage electromagnetic environments. If unresolved, visit a professional shop for system diagnostics to avoid disrupting daily use.
