A faulty coil pack will generally have symptoms similar to a faulty spark plug. Some of the most common tell tale signs that a coil may be defective include: A rough idle A noticeable lack of power A significant drop in RPMs while accelerating for no apparent reason Misfiring A blinking or intermittently activating check engine light Replace your failing or faulty items with these direct replacements. Part also fits* M CLASS 2012 – 2016 3.0, PETROL, BI-TURBO, PN A2769061201, W166, 03/12-01/16 *This is a guide only. If you are unsure if this part is suitable for your vehicle, please contact us and we can confirm prior to your purchase.
