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Only in the “last few meters” just before stopping at a traffic light, the car shakes violently.
Even though it is smooth until it slows down, it leans forward unnaturally only at the moment of stopping——。
This symptom is often consulted at VW and involves not only the brake system, but also multiple parts such as suspension, mounts, idle control, and DSG control.
If left unattended, not only will the ride deteriorate, but there will also be a risk of a rear-end collision during traffic jams.
In this article, we will explain in an easy-to-understand manner the causes and how to distinguish “jerks only just before stopping”.
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- Common symptoms
- There are four main causes.
- Cause (1): Suspension sloppy (most common)
- Cause (2): Brake pads are too strong in the initial braking
- Cause (3): Engine and mission mount deterioration (cannot absorb shaking)
- Cause (4): Disturbance of idle control and DSG control (unstable correction just before stop)
- Points that can be checked in DIY
- Is it okay to drive? (Urgency)
- Approximate repair cost
- Related parts to check at the same time
- Conclusion
- Defect details by vehicle type
- Frequently Asked Questions (FAQs)
Common symptoms
- Only just before the stop do you lean forward with a “thud”
- Even if you weaken the brakes, it will be a joke
- Symptoms tend to intensify when the air conditioner is turned on.
- Awkward slow-to-stop movements
- The deceleration itself is smooth, but only the end is disturbed
- D→R (R→D) can also cause a mild shock
There are four main causes.
- Suspension (especially front shock) sloppy
- Strong initial braking of the brakes and sudden rise of braking force
- Amplification of forward and backward sway due to engine and transmission mount deterioration
- Disturbance of idle control and DSG control (unstable correction just before stop)
Cause (1): Suspension sloppy (most common)
When does it happen?
- Sink too far forward just before stopping
- Fluffy on steps
- The “return” of the body posture is slow
Why do I have that symptom?
When the damping force of the front shock weakens,
it cannot absorb the load transfer just before stopping, and the return is disturbed while sinking forward.
As a result
- I was jerking only when I was about to stop
- Even small brake operation causes back and forth shaking
It is easy to have symptoms unique to the “last few meters”.
If left unattended?
- Ride quality deteriorates
- Uneven tire wear
- Reduced straight-line stability
Cause (2): Brake pads are too strong in the initial braking
When does it happen?
- The effect of starting to step suddenly rises
- The lower the speed, the easier it is to jerk
- It may come out after installing external pads
Why do I have that symptom?
Depending on the characteristics of the abrasive material and the wear condition,
the braking force may be applied only just before stopping.
In particular, it is easy to appear in the following situations:
- Pads for European cars with strong initial braking
- Pad Glazing (Surface Hardening)
- Braking force changes at low temperatures.
This makes it feel like it is just before it stops.
If left unattended?
- Difficult to control brakes
- Tire wear faster
Cause (3): Engine and mission mount deterioration (cannot absorb shaking)
When does it happen?
- When stopping, it shakes back and forth
- Strong shock even when switching between D/R
- Increased idling vibration
Why do I have that symptom?
Due to
the deterioration of the mount, the movement of the engine mission is directly transmitted to the car body,
so even a slight change in control just before stopping can be felt as a large shaking.
Just before stopping, the load changes are particularly large and the point is prone to shaking.
If left unattended?
- Worsening of forward and backward shaking
- Increased burden on other mounts
- Increased shock at launch
Cause (4): Disturbance of idle control and DSG control (unstable correction just before stop)
When does it happen?
- Rotation drops suddenly just before stopping
- Swing back and forth with the accelerator off
- Low-speed jerks also occur
Why do I have that symptom?
Just before the shutdown, the following is done at the same time:
- Controlling engine rotation
- Tweak throttle opening
- DSG 1st Speed and Reverse Control
- Auxiliary load (air conditioner, generator) control
If this is disturbed,
- Sudden change in rotation → jerk
- DSG connection is unstable → shaky
It is easy to get a “jerk that only occurs just before stopping”.
If left unattended?
- Jerky deterioration
- Increased launch shock
Points that can be checked in DIY
- Large shaking on bumps and parking lot ramps → Suspension
- Strong symptoms with air conditioner on → Control system (idle throttle)
- → mount system that shakes when switching between D/R
- Sudden change in brake pedaling force → pad characteristics
- Rotation goes up and down only just before stopping → Control system
*The final decision is made at the maintenance shop.
When a driving problem occurs, it may be necessary to tow the truck depending on the situation.
In these cases, it may be covered by road assistance or riders of automobile insurance, so it is safe to lightly review the contents of your current contract.
If you may not have a proper understanding of the coverage, you can use a comparison service to check the coverage details and premiums of multiple companies at once. Since you can get a complete picture in a short time, many people use it for repairs and inspections.
👉 Free Car Insurance Bulk Quote Service
Is it okay to drive? (Urgency)
- Mild symptoms (mild jerks only): Allowed to drive
- Sink forward heavily when stopped: medium to high
- Strong shock, no shaking returns: High
- Abnormal noise and discomfort in braking: Very high (driving is not allowed)
Approximate repair cost
| Work Description | Approximate cost |
|---|---|
| Front shock replacement | 40,000 to 80,000 yen |
| Brake pad replacement | 15,000 to 30,000 yen |
| Engine/Mission Mount Replacement | 20,000 to 50,000 yen |
| Throttle idle control check | 5,000 to 15,000 yen |
| DSG control and learning value reset | 5,000 to 15,000 yen |
You can scroll
*Early inspection can prevent shaking and aggravation of shock.
👉Summary of maintenance and custom costs & working days of VW specialty store Nile Plus
Related parts to check at the same time
- Front shock
- Lower Arm Bushing
- Brake pads and rotors
- Engine/Mission Mounts
- DSG Operating Values
- Throttle Valve Air Flow
▼List of individual pages about undercarriage repair and maintenance▼
▼List of individual pages about engine and drive system repair and maintenance▼
Conclusion
The main causes of jerking just before stopping are insufficient suspension damping, initial braking strength, mount deterioration, and idle and DSG control disturbances.
Since the control of the car is concentrated just before
stopping, it is easy to feel shaking even if it is a small malfunction.
Even
mild symptoms are safe to inspect as soon as possible.
Even if the symptoms are similar, the causes vary from vehicle to vehicle.
Even if it is the same “jerk just before stopping”, there are various causes such as suspension, brakes, and control systems.
If you are unsure, it is safe to have it inspected at a maintenance shop without overdoing it.
Defect details by vehicle type
Although the “way of getting out” the defect is similar, “which model has many problems” is slightly different for each car model.
Trends by vehicle model and common breakdown cases among other owners are summarized on the following page.
Frequently Asked Questions (FAQs)
Q1. Is it dangerous to jerk just before stopping?
A1. Although it is often not a serious problem that makes it impossible to drive immediately, if it is caused by suspension deterioration or control disturbances, the shaking may increase and the risk of rear-end collisions may increase. Even if you have mild symptoms, you can rest assured that you will have an early inspection.
Q2. Why does it shake only the “last few meters” of the stop?
A2. Just before stopping, the suspension, brakes, idle control, and DSG control work at the same time, so it is easy to experience shaking even with small problems. In particular, it is often caused by front shock deterioration and the strength of the initial braking of the brakes.
Q3. Is there anything that can be improved by replacing the brake pads?
A3. It is. There are cases where pads with too strong initial braking or pads with hardened surfaces (glazing) tend to crack just before stopping, and can be improved by replacing pads.
Q4. Why does it get worse when the air conditioner is turned on?
A4. When the air conditioner is running, the auxiliary load increases, and the idle control becomes busy, so it is easy to delay the rotation compensation just before stopping. As a result, swaying and jerking may intensify.
Q5. How much should I pay for repairs?
A5. If it is mild, it may be improved with a control inspection and cleaning of about 5,000 to 15,000 yen. If the suspension or mount deterioration is the case, the price is around 20,000 to 80,000 yen. If multiple places overlap, the cost will increase, so it is certain to get a diagnosis first.
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