What does it mean to replenish air in a Porsche?
3 Answers
When the Porsche dashboard indicates the need to replenish air, it is a signal for tire pressure warning, indicating that the tire pressure value is too low and the tire requires inflation. After inflating, a tire pressure reset needs to be performed, followed by replenishing the air, and the warning will then disappear. Below is an introduction to the tire pressure gauge: 1. A tire pressure gauge is a type of air pressure gauge for tires. It consists of a gauge head, piston, gauge body, scale, main spring, etc., with only one air pressure measurement port on the gauge head. 2. It features a simple structure, small range, high accuracy, and ease of use. 3. The standard tire pressure for ordinary car tires is 2.5kg for the front wheels and 2.7kg for the rear wheels in winter; and 2.3kg for the front wheels and 2.5kg for the rear wheels in summer.
When I previously worked with Porsche models, I noticed that the supplemental air system is actually a secondary air injection function. During cold starts, the engine draws additional fresh air into the exhaust manifold to re-burn unburned hydrocarbons, thereby reducing pollutant emissions. This system primarily relies on an electric air pump and a one-way valve to operate, and it typically only activates when the engine hasn't reached its operating temperature. Common failures include burnt-out air pump motors or carbon buildup causing valve jamming, and sometimes it can even trigger the engine malfunction light. I recommend regularly checking the system's hoses for air leaks, especially paying attention to connector corrosion during humid seasons. Porsche's design is quite eco-friendly, but repairs can be really expensive.
I experienced a Porsche secondary air injection system failure. At that time, there was a puffing sound from the exhaust pipe during cold starts, and the dealership diagnosed a damaged electric air pump. The technician explained that this system injects fresh air into the exhaust passages to help the catalytic converter reach operating temperature faster and reduce cold-start emissions. Its key components include not only the air pump but also the combination valve and vacuum lines, with the combination valve being prone to carbon buildup and sticking, leading to failure. Now, every year before winter, I have the mechanic check the air pump voltage to prevent system failure. If the combination valve makes abnormal noises, it must be replaced promptly; otherwise, the catalytic converter will also suffer.
