Why does the Atenza display 'no key detected' after window tinting?
2 Answers
The reason why the Atenza displays 'no key detected' after window tinting is: water ingress into the control module or wiring causing a short circuit. It is recommended to focus on checking the wiring under the dashboard. Car window tinting involves applying a thin film-like material to the front and rear windshields, side windows, and sunroof of the vehicle. This film-like material is also known as solar film or heat insulation film. The Atenza is a mid-size car launched by FAW Mazda, with body dimensions of 4870mm in length, 1840mm in width, and 1445mm in height, and a wheelbase of 2830mm. In terms of power, the Atenza is equipped with 2.0L and 2.5L naturally aspirated engines.
I've encountered a similar situation before. Right after getting my Mazda6 window tinted, the keyless system displayed 'No Key Detected'. I believe the main reason might be that during the tinting process, water was used to clean the windows, and some accidentally seeped into the door interior where the smart key antenna is located. This antenna is responsible for sensing the key signal, and once it gets damp or short-circuited, it can trigger false alarms. My solution was to first check the key battery. After replacing it with a new one and still having no luck, I parked the car in a dry place for a day to let the moisture evaporate naturally. If that doesn't work, it's best to head straight to the dealership. They'll remove the door panel and dry out the circuitry. When getting window tint, always choose a professional shop and remind the technicians to use less water or quickly dry with a blower. This issue is common in cars with smart key systems, and prolonged exposure can corrode components, so timely action is crucial.
