Infiniti M37, M56 (Y51) Series Workshop Manuals

A complete repair and maintenance manual covering all aspects of diagnostics, repair and maintenance of the Infiniti M37 and M56 models, VQ37VHR, VK56VD Engines. The manual includes detailed diagrams, instructions for working with the engine, transmission, electrical system and safety systems. This manual is designed for professionals and owners to facilitate diagnostics and maintenance, ensuring reliable operation and extending the service life of the car.

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Engine: VQ37VHR, VK56VD

Oil consumption

The engines, especially the M56 model with a 5.6-liter engine, sometimes suffered from increased oil consumption.

Solution: Regularly check the oil level and change the oil in a timely manner with quality products.

Gearbox problems

Jerking and delays were observed when changing gears, especially when driving slowly or accelerating sharply.

Solution: Reprogram the transmission control unit (if necessary) and regularly service the transmission.

Cooling system problems

Some owners reported overheating associated with the radiator and water pump.

Solution: Regularly check the cooling system and replace the coolant preventively.

Suspension component wear

Worn suspension arms, bushings and stabilizer bars were a common problem, especially on the M37.

Solution: Regularly inspect and replace worn parts.

Multimedia and navigation system malfunctions

Owners sometimes experienced slow or incorrect operation of the navigation and touch screen.

Solution: Update software or replace the multimedia unit in case of serious malfunctions.