The E46 M3 SMG pump is a common failure item beyond 80,000 Miles, Most E46 M3 SMG will need a replacement pump around that time and certainly during their life time. The common faults to indicate the Pump is failing are: (INPA Diagnostic Software).56 Switching on time of Hydraulic unit: Means hydraulic unit has been on for too long to build up pressure, this can be seen due to pump motor issue or on track and hard use. 53 Lower level of pressure reached HE: Means that the pump has failed to build up pressure and the pressure dropped to below the minimum limit, this is a straight indication that the pump is failing, relay might be the issue as well. A lot of owners with SMG issues attempt to change the Salmon relay which could be the issue in a small number of cases, or apply a temperature sensor fix in which they bypass the sensor al together which is not good or put in a resistor to fool the ECU into thinking the temperature is fine, both are not good and BMW has already updated this sensor and we supply the latest updated sensor as part of this repair package. As mentioned above the SMG relay gets blamed for a lot of pump failures which is not totally true but we recommend changing it anyways when repairing the pump. We can supply these motors out of our UK stock, they are German manufactured by one of the most reputable companies that build OEM motors for large manufacturers including BMW.
We have tested them extensively to make sure they are reliable and work well and have them installed in our cars. There are a few companies out there that attempt to refurbish the SMG pump, these companies only rewind the motor and sometimes include aftermarket temp sensor which works for some time but not reliable as having a new sealed motor with a genuine BMW sensor.
We have extensive experience in SMG gearboxes and have identified 2 items to be the source of most SMG pump faults which are the motors and the temperature sensor and both are supplied in this kit. We stand behind our product and provide a guarantee the motors for 12 months.(an ECU error print out is needed before issuing a return authorisation - INPA Preferred). Thats what you need to fix your SMG Pump Motor and sensor without any waiting or reliability issues. We always recommend diagnostics and fitting by qualified BMW mechanics with the correct equipment. The SMG system is complex with many possible issues so m. Ake sure your M3 is diagnosed properly by a competent mechanic. We can help and support troubleshooting but final diagnosis cannot be done remotely so bear that in mind. Fixing your SMG is not about luck but about proper diagnosis.
A capable DIYer can also do the job with loads of instructions on the web about how to replace the SMG pump on the e46 M3. Beware of knock offs who attempt to sell you used or refurbished motors as new, Also beware of. Top BMW specialists across the the UK are our loyal customers. We only use reputable insured couriers for our deliveries. The item "BMW E46 M3 SMG Pump Repair kit + SMG Temperature Sensor" is in sale since Sunday, October 20, 2019.
This item is in the category "Vehicle Parts & Accessories\Car Parts\Transmission & Drivetrain\Gearboxes & Gearbox Parts". The seller is "egcmpgrp" and is located in Basingstoke, Hampshire. This item can be shipped worldwide.