Tag Archives: grinding noise

Ford & Lincoln Rear End Grinding Noise

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In December 2020, Ford opened an investigation into a Ford engineering vehicle that experienced a rear drive unit seizure. The final analysis found that the seizure was the result of inadequate lubrication and that a malfunction during the rear drive unit lubricant fill procedure was the cause of the miss-fill. Further investigation found another ten rear drive units with low lubricant fill level and 3 warranty claims for this condition. As a result, Ford will be recalling certain 2020-2021 Ford and Lincoln cars and trucks.

Vehicles Affected Include
2021 Ford Bronco Sport
2020-2021 Ford Edge
2020 Ford Escape
2021 Lincoln Corsair
2020 Lincoln Nautilus
WARNING: Drivers may hear a metallic grinding or whining sound from the rear of the vehicle prior to a rear drive seizure.

Ford will notify owners, and dealers will check the rear drive unit lubricant level. Axles found to have lubricant at the minimum level will be filled to the full level. Axles found to be below the minimum lubricant fill level will be replaced. Ford’s number for this recall is 21S02 and the NHTSA campaign number is 21V-011.

2020 Ford F-150 Grinding Noise When Engine Starts

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Ford will be contacting a small number of 2020 Ford F-150 owners because of a problem with the electrical system in their trucks. According to the safety report filed with the NHTSA, the affected vehicles were built at their Kansas City assembly plant June 30, 2020 and July 1, 2020.

These trucks may have been built with a positive power supply cable nut that does not meet design specifications. These nuts do not have the correct torque characteristics or conductive coating needed at the power supply attachment to the starter motor. This could increase the amount of heat generated during starting and could create an electrical arch that could start a fire. Drivers will be alerted of a problem through grinding noises when starting or restarting during a stop-start event, or the engine may not start at all.

Owners receiving notices will be asked to return to their dealers to have the starter motor B+ power supply attachment nut replaced with the correct part. Ford’s number for this recall is 20S40 and the NHTSA campaign number is 20V-467.