: Push the rear plastic tab down and lift the cover away.
If your brand is not listed, you can automatically scan for the code: Turn on the device and hold CODE SEARCH until the light stays on. Press the specific device button (e.g., (or POWER) repeatedly until the device turns off. (or ENTER) to save the code. Key Features & Functions VCR Recording : To prevent accidents, press the to begin recording. Device Switching
Your ZN-401S manual contains a table of error messages. Here is the most common list: zn-401s manual
Always refer to your vehicle's door placard for the recommended PSI, rather than the "Max PSI" listed on the tire sidewall.
Use this method if you have the 3-digit code for your brand (e.g., Zenith codes: 133, 154, 172, 401 SchematicsForFree : Push the rear plastic tab down and lift the cover away
Inside the device, a symphony of old technology began. Relays chattered like insect legs; tubes glowed with a soft, orange heat. Elias watched the analog gauge on the faceplate. The needle quivered, drifting from the green zone into the yellow.
Remove the battery cover on the back by pushing the tab down and lifting. Insert batteries matching the Replace the cover. A low battery warning (or ENTER) to save the code
This section addresses the most common user questions regarding the ZN-401S.