Steering heavy at low speed
Power assistance is designed to do most of its work when parking, so heavy steering at walking pace with normal feel at speed means the assistance is weak or missing. On a hydraulic system check fluid level, belt and pump noise first; on electric systems look for a steering warning lamp and a stored code, because the module usually knows exactly why it has reduced assistance. Steering that is heavy at all speeds and does not self-centre is more likely a mechanical bind in the column, rack or ball joints.
Urgency
Visit a workshop soon
Possible causes, most likely first
- Low power steering fluid or a leak
Hydraulic systems: a whine that rises when turning and foam in the reservoir. Check the level cold, then look at the rack gaiters, pump shaft seal and hose unions; a gaiter full of fluid means the rack seals have gone. - Worn or slipping power steering pump belt
Assistance fades on full lock at idle and a squeal is heard when turning. Inspect belt condition and tensioner, and check that the pump pulley is not slipping on a worn belt. - Failing hydraulic pump
Steering heavy at idle but better with revs, with a groan when turning. Measure pump pressure with a gauge at the high-pressure line; below the specification at full lock (typically 80-120 bar) means the pump. - Electric power steering fault or reduced assistance mode
EPS systems drop into a reduced-assist mode with a steering lamp when they detect a torque sensor, motor or voltage fault; also common after a weak battery or jump start. Read the EPS module codes and check system voltage under load. - Tyre pressures low or wrong tyre size
Soft tyres or a wider aftermarket size make parking effort noticeably higher. Check pressures against the door-pillar sticker; it is the cheapest fix on this list. - Seized or dry ball joints, tie rod ends or strut bearings
Steering heavy at all speeds and reluctant to self-centre, sometimes with creaking. Disconnect the tie rod ends and turn the hub by hand; a stiff ball joint or strut top bearing resists noticeably. - Binding steering column or universal joint
Notchy, heavy steering in one position regardless of speed, often after water ingress rusts the column UJ or intermediate shaft. With the wheels lifted, turn the wheel and feel for a tight spot; check the column joints for rust and play.
Advertisement728 × 90
What you can check yourself
- Check all four tyre pressures against the sticker on the door pillar
- Look for a steering warning lamp on the dash and have the codes read
- On hydraulic systems check the fluid level and listen for a whine when turning at idle
- Turn the wheel lock to lock at a standstill and note whether the effort is even or has tight spots