Service | St. Peters, MO
What a clunk, a creak or a groan from your Lincoln's suspension or steering usually means, and how our technicians track it down after a rough St. Charles County winter.
By May, the potholes on Mexico Road have been patched once and opened up again. A winter of freeze and thaw does that to St. Charles County pavement, and every hard hit goes straight into your Lincoln's suspension. Plenty of owners notice a new sound about now. A dull knock over the railroad tracks, a creak pulling into the driveway, a groan when they turn the wheel in a parking lot.
Those sounds carry information. Each part of the suspension and steering tends to make its own kind of noise when it wears, and describing it well can save time at the service drive. This post goes through the common noises, what usually causes them and what our technicians check.
Quick answer: A clunk over bumps often points to worn sway bar links, bushings or struts. A creak or squeak in turns or over speed bumps can come from dry bushings or ball joints. A groan or whine while steering can point to the steering system. Book an inspection when a new noise shows up, and sooner if the steering feels loose or the vehicle wanders.
Clunk over bumps
Links, bushings or struts
Creak in turns
Bushings or ball joints
Groan when steering
Steering system
What Does a Clunk Over Bumps Mean?
A clunk or knock you hear over potholes, driveway lips or uneven pavement is one of the most common suspension complaints. Sway bar end links are frequent culprits. They're small rods that connect the stabilizer bar to the suspension, and once their joints wear loose they rattle over every bump, especially at low speed.
Worn struts or shocks can knock too, along with the upper strut mounts. Control arm bushings, which are rubber pieces where the arms bolt to the frame, can crack and let metal parts shift and hit. A single thump after a big pothole hit is something to keep an ear on. A clunk that repeats on every rough patch means something has worn or come loose.

Why Does My Lincoln Creak or Squeak Over Speed Bumps?
A creak that sounds like an old door hinge usually comes from rubber or a joint that has dried out. Bushings, ball joints and sway bar bushings can all creak as they move, and cold mornings often make it louder. If the sound shows up over speed bumps, pulling into a sloped driveway or turning slowly, that pattern helps the technician narrow it down.
Ball joints deserve attention. They're the pivots that let the wheels steer and move up and down, and a worn one can creak, knock or make the steering feel vague. A ball joint that wears far enough can affect control, so a creak with any change in steering feel is a reason to come in soon.
Steering feels loose or vague
The wheel has more free play than it used to, or the vehicle needs constant small corrections on I-70.
Clunk paired with a wander
A knock over bumps along with the vehicle drifting in its lane can point to worn steering or suspension joints.
Nose dives under braking
The front end drops hard when you stop, which can mean worn struts or shocks.
Bouncing after bumps
The body keeps moving after a dip instead of settling quickly.
A corner sitting low
One corner looks lower than the others when parked, or a suspension warning message appears on models with air suspension.
A clunk that repeats on every rough patch means something has worn or come loose.
What Causes a Groan or Whine When Turning the Wheel?
Most current Lincolns use electric power steering, which doesn't rely on a fluid pump. A groan or whine when you turn the wheel can still come from the steering rack, a worn tie rod end, the column or the suspension parts that move as the wheels turn. On an older Lincoln with hydraulic power steering, low fluid or a tired pump can whine too.
A popping or clicking sound in tight, slow turns, like backing out of a parking space at Mid Rivers Mall, can point to the front strut mounts or to a drive axle joint. A clicking noise that speeds up as you accelerate through a turn points more toward the axle.
Write down when it happens. Turning left, turning right, only when cold, only at low speed, only over bumps while turning. That kind of detail helps your service advisor and the technician recreate it on the test drive.
Schedule a Suspension CheckVisit Our Service Department
How Do Technicians Track Down a Suspension Noise?
Noises are tricky because they rarely happen on cue. A good diagnosis starts with listening to you, then goes step by step:
Ride along
A technician drives the vehicle on a route that recreates the noise, ideally with you describing what you hear and when.
Lift inspection
With the vehicle in the air, the technician checks for play in ball joints, tie rods and links, and looks at bushings, mounts and boots for cracks or tears.
Struts and shocks
The technician looks for fluid leaks, damage and worn mounts, and checks how the vehicle settles after a bounce.
System scan
On Lincolns with air suspension or adaptive suspension, the system is scanned for stored faults.
Explain and quote
Your service advisor walks you through what was found, what affects safety now and what can be planned for later.
If a part in the steering or suspension gets replaced, the technician will tell you whether an alignment is needed afterward. Many suspension repairs change the angles of the wheels, so the two often go together.
St. Peters driver tip
Before your appointment, drive a short loop that triggers the noise and note where it happens. The rail crossings and patched spots on Salt River Road or the driveway into Quail Ridge Park are good test spots. Tell your advisor exactly where and when you hear it so the technician can drive the same kind of surface.

Is It Safe to Keep Driving With a Suspension Noise?
Some noises are an annoyance for months. A dry sway bar bushing can squeak for a long time without changing much. Others need attention soon. Worn ball joints, tie rod ends or badly worn struts affect how the vehicle steers and stops, and they wear tires faster in the meantime.
You don't have to diagnose it yourself. If the noise is new, if it's getting louder, or if it comes with any change in how the vehicle steers, rides or stops, book an inspection. Catching a worn link or bushing early is usually a smaller repair than waiting until the parts around it wear too.
Book it your way
Reserve a time online, in the Lincoln app, or by phone at 636-441-4400. For vehicles within the 4 year or 50,000 mile new vehicle limited warranty, Pickup and Delivery costs you nothing: we take your Lincoln, leave a loaner and return yours washed.
Learn About Pickup and DeliveryQuestions Owners Ask About Suspension Noises
Why is my suspension louder in cold weather?
Rubber bushings stiffen in the cold, and dry joints creak more. If the noise fades once the vehicle warms up, mention that pattern to your advisor.
Can a pothole damage my suspension?
A hard hit can bend or loosen parts, damage a strut or knock the alignment out. If something sounds or feels different after a pothole, have it checked.
What does a rattle from underneath usually mean?
It could be a loose sway bar link, a heat shield or something unrelated to the suspension. A lift inspection sorts it out quickly.
Questions Owners Ask About Struts and Shocks
How do I know if my struts are worn?
Watch for bouncing after bumps, nose diving when you brake, leaks on the strut body or a knock over rough pavement. A technician can confirm on a lift.
Should struts be replaced in pairs?
Replacing them in pairs on the same axle keeps the ride even side to side. Your advisor will explain the options for your vehicle.
Does my Lincoln have air suspension?
Some Lincoln models and trims offer air suspension. Check your owner's guide, or ask your service advisor to look it up by VIN.
Questions Owners Ask About Steering
Why does my steering wheel feel loose?
Worn tie rod ends, ball joints or other steering parts can add free play. Book an inspection soon, since loose steering affects control.
Does my Lincoln have power steering fluid?
Most current Lincolns use electric power steering with no fluid reservoir. Some older models used hydraulic systems. Your owner's guide will say which one you have.
Why does my steering wheel shake at highway speed?
Shake at speed often comes from wheel balance or tire issues, though worn steering parts can play a part. An inspection checks both.
Questions Owners Ask About Repairs
Do I need an alignment after suspension work?
Often, yes. Many suspension and steering repairs change the wheel angles. The technician will tell you if one is needed.
What parts do you use for suspension repairs?
Our service department page says the store uses genuine Lincoln parts for repairs, with a 12 month or 12,000 mile parts warranty.
How long does a suspension repair take?
It depends on the part and the vehicle. Ask your service advisor for a time estimate once the inspection is done.
Questions Owners Ask About Service in St. Peters
Where is the service department?
Dave Sinclair Lincoln St. Peters is at 4760 North Service Road, along I-70.
What are the service hours?
Monday through Thursday 7 AM to 7 PM, Friday 7 AM to 5:30 PM and Saturday 8 AM to 5 PM. Closed Sunday.
How do I book a suspension inspection?
Book through the website or the Lincoln app, or call 636-441-4400. Describe the noise and when it happens so the right time is set aside.