The BMW DME or otherwise known as an ECU, ECM or PME is a major part of your vehicle. Essentially, it's the onboard computer, responsible for regulating the car's engine. We often modify the engines computer to help the engine run smoother. Helping it run smoother unlocks extra horsepower and available torque.Mar 30, 2018
What is a CAS module on a Mini Cooper?
The CAS module enables your vehicle to start. If faulty, the car typically won't crank and no start signal will be generated. The CAS module is an important module in BMW and MINI vehicles for two reasons. ... For a BMW and MINI to start the CAS, Key, and the engine control unit (ECU or DME) need to be in sync.
What is DME BMW e90?
Digital Motor Electronics (DME). The comprehensive management system for your engine: Digital Motor Electronics (DME) controls all key aspects of the engine's operation, ensuring optimum reliability, maximum performance and the lowest possible fuel consumption and emissions.Apr 8, 2010
What is a CAS on a BMW?
Control module Car Access System - CAS. The CAS serves as an antitheft alarm system and enables the start of BMW vehicles. A transponder chip is integrated in each of the vehicle keys. A ring coil is fitted about the ignition lock.
How does CAS work on a car?
Nissan's RB CAS is an optical sensor located on the exhaust camshaft gear. Its job is to read both the engine speed and the piston/stroke position and relay that information to the ECU which then uses it to calculate and deliver Fuel and Ignition events.