Skip to content
EN · km
Units
My Garage
Automotive glossary

Contact Cleaner (Electrical Cleaner)

Contact cleaner is a quick-drying solvent spray used to remove dirt, oxide and moisture from electrical connectors and sensors.

On this page

What is Contact Cleaner (Electrical Cleaner)?

It evaporates without leaving a residue. It is used on plugs, switch contacts and some sensors. It is often combined with dielectric grease after cleaning. Cleaning the mass air flow sensor needs a dedicated MAF cleaner rather than general contact cleaner.

How it works

The solvent dissolves contamination and dries quickly, so it does not conduct or leave a film.

Why it matters for your car

Check that it is safe for plastics; some solvents attack housings and seals. Disconnect the battery or circuit before spraying live electrical parts.

Other terms