Mercury Mountaineer starts at first key turn, part 6L9Z-15604-BA no longer available as solution on Mercury Mountaineer

Some Mercury Mountaineer owners report experiencing difficulties with starting issues due to the unavailability of part 6L9Z-15604-BA. These owners have found it beneficial to check for alternative parts that could serve a similar function, as the discontinued part may hinder vehicle performance. Additionally, some have explored aftermarket options for the Smart Fused Junction box, while others have successfully located OEM parts like the Genuine Ford 6L9Z-15604-AA at competitive prices as potential replacements. Consulting with automotive experts specializing in Mercury vehicles has also provided valuable advice on workarounds. Furthermore, online retailers specializing in genuine Ford parts may offer solutions for the needed components. It is crucial for owners to ensure that any alternative part is compatible with their 2006 Mercury Mountaineer to prevent further functionality issues.