Bosch Releases New ADS 525X Diagnostic Tool

Bosch says the tool includes full-system color wiring diagrams and its Repair-Source library.

By Tire Review Staff
September 16, 2020

Bosch says its new ADS 525X diagnostic scan tool comes with a flexible, modular software subscription, OE-level vehicle coverage, weeks of battery life, and fast all-system scans.

Bosch says the tool includes all-access coverage for the first year plus 30 free days of full-system color wiring diagrams and Repair-Source featuring a complete on-tool OEM service and repair information library. The subscription can be upgraded or downgraded at any time.

The system has up to 14 hours of uninterrupted battery life and weeks of standby time, Bosch says, as well as a wireless VCI.

Troubleshooting Porsche TPMS

Tips for diagnosing Porsche TPMS systems and performing relearns.

By Madeleine Winer
May 24, 2023

The Porsche 959 was another first to use a tire pressure monitoring system (TPMS) because it was equipped with the world’s first self-supporting run-flat tires made by Bridgestone. This TPMS setup was again used on the 928 for model years 1990 to 1994.

The early system used two sensors mounted 180 degrees apart in special holes in the valley of the wheel. The sensors looked like a stack of poker chips. A diaphragm inside the sensors connected to switches that were set to a reference pressure. The receiver was mounted on the knuckle and was an inductive coil that would pass current through the sensors. Depending on the position of the diaphragm and which switches were open or closed, the amount of current flowing through the receiver’s coil would change.