Toyota Squeaking Noise From Rear Suspension 

Toyota Squeaking Noise From Rear Suspension 

Follow the repair procedure in this bulletin to address this condition.

Some 2014 – 2019 model year Highlander Hybrid vehicles may exhibit a squeak noise from the rear suspension (Figure 1). This condition may be more noticeable in colder ambient temperatures and may occur when traveling over uneven roads or when the vehicle comes to a complete stop. Follow the repair procedure in this bulletin to address this condition.

Figure 1

Repair Procedure

1. Confirm the condition exists using ChassisEAR™ (or equivalent), test-drive the vehicle over an uneven road surface, such as a sloped driveway, to verify the condition is coming from the bushings. Applying soapy water to the suspected bushing may temporarily diminish the noise intensity and help identify the source of the noise is a squeak noise present? 

Yes  –  continue to Step 2.

No –  this bulletin does not apply and you should proceed with diagnostics in the service information.

2. Before installing new parts, confirm the identification mark as shown. The identification mark on the NEW part faces the outside of the vehicle. If this mark is not present, the part is incorrect and should not be installed. The identification mark on the NEW part faces the outside of the vehicle in Figures 2 and 3.

Figure 2 and 3

3. Replace BOTH rear trailing arm assemblies even if ONLY one side is emitting the squeak noise. 

4. Test-drive the vehicle to verify no squeak noise is present.

You May Also Like

ABS/ESC False Activation Diagnostics

False activation incidents involve the ABS modulator taking over braking or intervening to restore vehicle stability.

The 2012 model year marked the first year electronic stability control (ESC) became a standard feature in vehicles. The government calculated that it would cost less than $400 per vehicle. 

The reason for the extra cost was the additional sensors to measure the yaw and lateral acceleration. With changes to the software in the ABS module, stability control could be applied to most cars and trucks.

Audi Alignment & Calibration

As models get more luxurious, features like air suspension and adaptive cruise control can make the alignment more complex.

Brake Rotor FAQ

Here are the answers to our frequently asked questions regarding brake rotors.

Adjusting Parking Brakes

You should never estimate when it comes to parking brake adjustments.

Installing New Rotors

Knowing if and why there’s runout will help you reinstall a smooth braking system.

Other Posts

Toyota Milliwave Calibration Tips

Calibration is necessary due to several factors affecting the radar’s functionality.

Integrated Wheel Ends

The leading cause of IWE failure is water finding its way into the vacuum lines under the hood and in the wheel well.

Air Ride Suspension Diagnostics

The key to understanding the embedded logic of air ride systems is using service information.

Struts and Memory Steer

Here’s how to recognize when a vehicle is exhibiting signs of memory steer.