BMW 4 Series Power Steering Malaysia — EPS

• All 4 Series use electric power steering (EPS) — no fluid to change
• Common EPS issues: groaning on full lock, variable weight feeling
• EPS failure (rare before 120,000 km) to repair

The 4 Series uses electric power steering (EPS) — there is no hydraulic fluid to check or change. However, EPS is not maintenance-free: the steering column bearing and EPS motor are wear items, and the system requires correct coding to the vehicle's VIN if the EPS unit is replaced. Common EPS symptoms in Malaysia: groan or whine on full lock in car parks, variable steering weight at highway speed (usually an EPS adaptation issue), or a steering warning light. ISTA can read EPS torque sensor data and motor current draw.