Many BMW enthusiasts and DIY mechanics working on older models, like the 1995 BMW 525it, often encounter the dreaded SRS (Supplemental Restraint System) light. Finding an affordable and effective tool to diagnose and resolve SRS issues can be challenging. This article explores the experience of using a low-cost B800 SRS code reader and reset module on a 1995 BMW 525it to successfully clear the SRS light.
The B800 scan tool is known as an entry-level option for reading and resetting SRS fault codes on various BMW models. Despite some concerns about compatibility with older vehicles, a recent test on a 1995 BMW 525it yielded positive results. The device, purchased for around $30 including shipping, proved surprisingly straightforward to use. The included manual, while containing minor translation quirks, provided clear instructions for operation.
Upon connecting the B800 scan tool, a number of stored fault codes were retrieved, many of which were related to voltage fluctuations – a common occurrence in older vehicles. These codes were easily cleared using the tool’s reset function. However, one persistent code reappeared: code 19, indicating an issue with the passenger seat belt clip. This fault is reportedly not uncommon in BMWs of this era.
Troubleshooting steps, based on online forums and discussions, suggested inspecting the wiring harness connecting to the passenger seat belt buckle. A visual inspection of the wiring under the seat revealed no obvious damage or breaks. After reinstalling the seat and reconnecting all components – importantly, forgetting to disconnect the battery beforehand – the B800 scan tool was used again. Code 19 persisted on the initial scan. As a final attempt, the reset function was activated once more for code 19. Remarkably, this time, the SRS light extinguished and did not return.
While acknowledging that this might not represent a permanent solution and emphasizes the importance of passenger safety, clearing the SRS light with the B800 scan tool was crucial for passing a mandatory vehicle inspection. This experience suggests that the B800 scan tool can be a valuable, budget-friendly tool for diagnosing and temporarily resolving SRS light issues on older BMW models like the 1995 525it, particularly for common faults such as seat belt clip malfunctions. It offers a practical solution for DIYers needing to address SRS light problems for vehicle inspections and basic troubleshooting.
