Popping Squeaking Noise from Front Shock Absorber and/or Creaking Noise from Front Lower Arm Bushing – 2014-2016 Mazda3

Subject:

POPPING AND/OR SQUEAKING NOISE FROM FRONT SHOCK ABSORBER AND/OR CREAKING NOISE FROM FRONT LOWER ARM BUSHING

Bulletin No: 02-001/16
Last Issued: 04/15/2016

 

BULLETIN NOTE

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red beside the change bars.

Previously Issued TSBs: Date(s) Issued
02-001/16 02/23/16 and 01/08/16
02-004/15 05/12/15 and 04/24/15

 

 

APPLICABLE MODEL(S)/VINS

2014-2016 Mazda3 vehicles (Japan built) with VINs lower than JM1BM******304670 (Produced before November 16, 2015)

2014-2015 Mazda3 vehicles (Mexico built) with VINs starting with 3MZ

 

DESCRIPTION

Some vehicles may exhibit one or more of the following noises from the front suspension.

  • A squeaking noise from the front shock absorber when turning the steering wheel at a vehicle standstill caused by stick-slip between the front strut bearing and the coil spring.
  • A popping noise from the front shock absorber when passing over speed bumps caused by the bump stopper contacting the strut bearing when the shock absorber is compressed.
  • A creaking noise from the lower arm when driving over road bumps at 20-40 km/h caused by stick-slip of the front lower arm bushing. The noise occurs when the road surface is wet or after a car washing, and becomes more noticeable as the speed bump gets higher.

To correct these problems, the following changes have been made.

  • For the squeaking and popping noise, the shape of the bump stopper has been modified and a protector has been installed onto the coil spring.
  • For the creaking noise, the friction of the lower arm bushing has been reduced by adding a dry coating. Customers having this concern should have their vehicle repaired using the following repair procedure.

 

REPAIR PROCEDURE

  1. Verify the customer concern of noise coming from under the front of the vehicle when driving over speed bumps and/or driving on a rough road and/or turning the steering wheel at a standstill.
  2. If the noise has been confirmed, check the VIN and perform the appropriate repair procedure according to the following tables.

 

Vehicle Spec Vehicle Type A Vehicle Type B Vehicle Type C
JM1BM******** (2.5L with B45G-34-111) 100001 – 250356 250357 – 280997 280998 – 304669
JM1BM******** (2.0L with B45A-34-111) 100001 – 250356 250357 – 280997 300899 – 304669
3MZBM******** 100001 – 195510 195511 – 999999 N/A

 

Repair to Perform by Vehicle Type Vehicle Type A Vehicle Type B Vehicle Type C
1. Install Protector onto Spring Perform DO NOT Perform DO NOT Perform
2. Replace Bump Stopper Perform Perform DO NOT Perform
3. Replace Lower Arm Bushing Perform Perform Perform

 

Protector Installation

  1. Remove the spring according to MS3 online instructions or the Workshop Manual (section 02-13).
  2. Degrease 1.5 turns of the spring from the top.
  3. Cut a thin strip of paper to 138 mm in length (or use a cloth type measuring tape).
  4. Place the strip of paper (or cloth measuring tape) along the inner side of the coil spring starting at point (A) and mark the spot on the spring where (B) is. (B) is the starting point for the protector installation.

Coil Spring

  1. Install the protector (A) onto the coil spring aligning the end (slant cut side) with the marking at spot (B).

NOTE: Install the protector so the gap (C) is evenly aligned around the outer edge of the coil spring.

Install the protector so the gap (C) is evenly aligned

 

Bump Stopper Replacement

  1. Replace the bump stopper with the modified one according to MS3 online instructions or the Workshop Manual (section 02-13).

NOTE:

  • Before removing the mounting rubber, mark its original position so it can be re-installed later to the same position.
  • When replacing the bump stopper with a modified one, apply grease to upper side of the bump stopper and to the inside of the bump stopper (on the surface that contacts the damper rod).

CAUTION: It is not necessary to adjust the front wheel alignment because the front shock absorber and mounting rubber are not being replaced. However, make sure to install the mounting rubber to the original position.

Shock Absorber

 

A Front Shock Absorber C Coil Spring
B Mounting Rubber D Bump Stopper

 

Lower Arm Bushing Replacement

CAUTION: Installation of the modified lower arm bushing will affect the road noise and the riding comfort in a negative way. Therefore, only use this modified part for a customer vehicle with consideration of these adverse effects.

  1. Remove the front lower control arms (both sides) according to the on-line instructions on MS3 or the Workshop Manual (section 02-13).
  2. Remove the front lower arm bushing using SSTs 49 G030 797 and 49 B025 004.
  3. Place the SSTs on the front lower control arm as shown below, then press out the bushing.

SSTs 49 G030 797 and 49 B025 004

  1. Install the modified bushing using the same SSTs.

NOTE:

  • Before installing the new bushing, wipe the inside of the outer tube and make sure it is clean.
  • Apply soap suds to the bushing to ease the installation.
  • Always wipe off soap suds from the front lower control arm and bushing with a cloth.
  • Install the bushing so the projection (A) is pointing toward the front of the vehicle.

projection (A)

CAUTION: Make sure the bushing has been properly inserted by verifying that the bushing tab IS FULLY EXPANDED, as shown in the illustration to the left (A). The illustration to the right (B) shows an example of a bushing tab that IS NOT FULLY EXPANDED.

bushing tab IS FULLY EXPANDED

  1. After installing the bushing, verify the distance between the front lower control arm (A) and front lower control arm bushing inner pipe (B) equals 5.8 +/- 0.8mm as shown below.

verify the distance

  1. Reinstall the front lower control arm according to the on-line instructions on MS3 or the Workshop Manual (section 02-13).

NOTE: For the joint sections with rubber bushings, raise the vehicle using a lift, then temporarily tighten the installation bolts and nuts. Lower the vehicle to the ground and tighten them to the specified tightening torque.

  1. Perform wheel alignment inspection and adjust if necessary.

 

PART(S) INFORMATION

Old Part Number Description Qty. Notes New Part Number
B45A-34-111 Stopper, Bump 2 For Japan built 2.0L

B4YA-34-111 (Service Part) can also be used.

B45A-34-111A
B45G-34-111 Stopper, Bump 2 For Japan built 2.5L

B4YG-34-111 (Service Part) can also be used.

B45G-34-111A
Protector 2 All models KDY5-34-081
Piston Rod Nut 2 All models 9YB0-41-237
Front Lower Arm Bushing 2 For Japan built

KDY5-34-470A (Service Part) can also be used.

KD35-34-470C

 

NOTE:

  • For Mexico-built vehicles that are originally equipped with the Bump Stopper (BJS7-34-111), use B45A-34-111A for the repair.
  • For Mexico-built vehicles that are originally equipped with the Front Rubber Bushing (BSJ7-34-470), use KD35-34-470C for repair.

 

WARRANTY INFORMATION

Since two different causal parts (front shock absorber and lower arm) are involved in this repair, please submit the claim divided into the following two claims.

NOTE:

  • This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
  • This repair will be covered under Mazda’s New Vehicle Limited Warranty term.
  • Additional diagnostic time cannot be claimed for this repair.

Front Shock Absorber

  • Vehicle Type A: Install Protector and Replace Bump Stopper
  • Vehicle Type B: Replace Bump Stopper
Warranty Type A
Symptom Code 82
Damage Code 97
Part Number Main Cause B4YA-34-111, B4YG-34-111, B45A-34-111A or B45G-34-111A
Quantity 2
Operation Number / Labor Hours XXK8NFRX / 0.6 Hrs.
Related Part and Quantity 9YB0-41-237 Piston Rod Nut 2 Vehicle Type A and B
KDY5-34-081 Protector 2 Vehicle Type B only

Front Lower Arm

Dealer Sublets Wheel Alignment Dealer Performs Wheel Alignment
Warranty Type A
Symptom Code 82
Damage Code 93
Part Number Main Cause KDY5-34-470A (Lower Arm Bushing)
Quantity 2
Operation Number / Labor Hours XXK8NARX / 0.8 Hrs.

(Only replacement of front lower arm bushing)

XXK8NBRX / 1.8 Hrs.

(Includes front wheel alignment check and adjust using 4-wheel alignment

tester)

Sublet Code Z9

02-001/16

04/15/2016

https://www.nhtsa.gov/recalls?nhtsaId=10093143

https://static.nhtsa.gov/odi/tsbs/2016/SB-10093143-6903.pdf

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