B7F319: Emergency Call Button Short Circuit

If you’ve encountered the error code B7F319 Emergency Call Button: Short Circuit on your BMW, it typically manifests as an SOS fault displayed on your dashboard. While this can be concerning, the issue is often less complicated than it appears and can be resolved efficiently.

What Causes the B7F319 Fault?

This error is commonly misdiagnosed as a problem with the emergency call button or its wiring, as suggested by the fault code. However, in 99% of cases, the root cause lies within the Telematic Control Unit (TCU). This internal fault in the TCU leads to a short circuit, triggering the SOS fault message.

Symptoms to Look Out For

  • The vehicle attempts to dial BMW’s operator when the ignition is turned on, particularly after the car has been in a deep sleep state.
  • The SOS warning light appears consistently on the dashboard.

Our Solution to Restore Functionality

At Grosvenor, we’ve developed a reliable and cost-effective solution to address this issue. Instead of replacing the entire system at an exorbitant cost, we use a refurbished Telematic Control Unit that is fully tested and coded to your vehicle. This ensures:

  • Complete restoration of the emergency call system functionality.
  • A significant cost saving compared to dealership repairs.
  • A fast, same-day repair service, as we keep these units in stock.

Why Choose a Refurbished Control Unit?

Refurbished control units are a dependable alternative to new parts. Each unit is rigorously tested and programmed to match your vehicle’s specifications. This process guarantees that the repaired system operates as seamlessly as a new one, without the excessive price tag.

Advantages of Our Service

  • Same-Day Repairs: With control units readily available, we aim to complete most repairs within a single visit.
  • Expert Diagnosis: Our technicians ensure that the fault is correctly identified, ruling out other potential causes such as wiring or button issues.
  • Cost-Effective: By using refurbished parts, we provide a high-quality solution at a fraction of the cost of a new TCU replacement.

Book Your Repair Today

Don’t let the SOS fault disrupt your driving experience. Contact Grosvenor to schedule your repair and regain confidence in your BMW’s safety systems. Our expert team is here to ensure your vehicle operates flawlessly and efficiently.