Bmw 328i Tire Pressure Sensor

Since this is a manufacturing solution created just for the BMW Tyre Pressure Sensor, the torque accuracy needs to be adjusted after installation to meet the system. Use a VDA-certified electronic torque wrench (1.2–1.5N·m range) to tighten in three steps: first, pre-tighten with 0.5N·m to close the gap; then, tighten with 1.2N·m to make sure it seals; and finally, turn the wrench 15° in the opposite direction to relieve the metal stress. If you have changed wheel hubs, you must follow the BMW-approved process for replacing the tire pressure sensor. This means using the ISTA/D diagnostic system to do "TPMS Reset + CAN Bus Binding" and measuring the valve hole tolerance three times with a Mitutoyo micrometer. If the sensor sleep current is too high (>3.5μA), you need to send it back to the manufacturer right immediately to find out if the PCB board is at risk of short-circuiting and to keep it from affecting the stability of the signal in subsequent fuel system modules, such the injector circuit.

The fluororubber seal on the BMW Tire Pressure Sensor can handle temperatures as low as -40°C and as high as 125°C when the brakes are hot. However, the sensor base needs to be cleaned with 3M™ Citrus Cleaner neutral solvent every three months if it is exposed to calcium chloride de-icing agent (concentration >5%) or acidic car wash liquid (pH <4) for a long time.

If you have a BMW 328i Tire Pressure Sensor and an aftermarket turbocharger kit, you need to put a ceramic heat shield (P/N: 34-11-8-850-772) between the sensor and the high-temperature exhaust manifold. This will stop heat radiation over 150°C from speeding up the loss of lithium batteries. The X5 off-road variant has complicated terrain requirements. Quarterly 3M™ neutral cleaning maintenance can keep the airtightness accurate to 0.01bar/year in harsh climates and handle all kinds of road conditions throughout the world, including salt spray, extreme cold, and humidity.