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Question

What is “signal shadowing” in TPMS diagnostics?

Answer

It’s RF signal blockage from metal objects (lifts, battery packs) causing duplicated or missing packets.

Explain

In workshops, metal tire lifts or EV battery plates reflect TPMS signals, leading to misreads. CHEPQ tools use error-correction algorithms (read 3 consecutive packets) to filter out shadowing effects.

Recommended Diagnostic Solutions

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