BmwTalk

DIY guide for rebuild/repair valvetronic system on this BMW F10 535xi with N55B30 engine. This information can be used on BMW N20 also. We going to replace:

*Valvetronic eccentric shaft
*Valvetronic eccentric shaft bearings
*Valvetronic unit, which is integrated with hall effect sensors + the electric motor for the system, in one whole unit
*Fuel injectors (this is not required everytime)
*New valve cover gasket + some critical bolts and other bits

In this video we going to show, how this procedure should be done step-by-step. Removing of the valvetronic springs will be included.

Fault codes:

2A38 Valvetronic sluggish or open circuit
2A37 Valvetronic, eccentric shaft sensor: plausibility
2A47 Valvetronic, eccentric shaft sensor: plausibility
2A45 Valvetronic, actuator motor: plausibility
2A77 Control unit, internal fault: Valvetronic output stage
2A37 Valvetronic, actuator motor: power supply

Additional info about Valvetronic system:

The Valvetronic system is a BMW variable valve lift system which, in combination with variable valve timing, allows infinite adjustment of the intake valve timing and duration. The system claims to improve fuel economy and emissions, and negates the need for a throttle body in regular use.
First introduced by BMW on the 316ti compact in 2001, Valvetronic has since been added to many of BMW's engines. The first application of this technology in a turbocharged engine was the N55 engine.

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