Mercedes-Benz M-CLASS W166 Cold start control relay

Cold start control relay for Mercedes-Benz M-CLASS W166 — what you need to know

Finding the right cold start control relay for your Mercedes-Benz M-CLASS W166 is essential for safe and reliable driving. We stock 3+ options from 2+ trusted brands, all with TecDoc-verified fitment for your specific vehicle.

When choosing cold start control relay for your Mercedes-Benz M-CLASS W166, consider factors like OEM vs aftermarket quality, material specifications, and your driving conditions. OEM parts match original specifications exactly, while premium aftermarket brands like Bosch, TRW, and Febi Bilstein often offer comparable quality at lower prices.

All cold start control relay listed on this page are confirmed compatible with Mercedes-Benz M-CLASS W166. Our fitment data is sourced from TecDoc, the industry-standard European automotive parts database. If you are unsure about compatibility, check the OE part number on your existing component and use our cross-reference search.