Artur Posted Tuesday at 10:04 AM Report Share Posted Tuesday at 10:04 AM Strange noise when pressing the brake – vacuum pump issue? Hi everyone, I’m experiencing a strange noise when pressing the brake on my 2015 Ford C-Max Plug-in Hybrid. I suspect it might be the vacuum pump. Has anyone faced a similar issue? Is it possible to repair it instead of replacing the whole unit? Any recommendations on troubleshooting or finding the exact part? Thanks in advance for any advice Quote Link to comment Share on other sites More sharing options...
cr08 Posted 3 hours ago Report Share Posted 3 hours ago You need to elaborate by 'strange noise'. The electric vacuum pump for the brake booster on these vehicles is quite audible and normal. It may also activate periodically during normal brake application as the vacuum in the system is depleted. Run time during each occurrence can vary but may last a few seconds. If the system fails or cannot sustain proper vacuum, it monitors this and will throw codes and drop you back to hybrid or full engine operation so the engine can provide vacuum as a failsafe. Quote Link to comment Share on other sites More sharing options...
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