|Subject:||Bulletin No: 02-001/16|
|Last Issued: 04/15/2016|
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|
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
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.
- 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.
- 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|
- Remove the spring according to MS3 online instructions or the Workshop Manual (section 02-13).
- Degrease 1.5 turns of the spring from the top.
- Cut a thin strip of paper to 138 mm in length (or use a cloth type measuring tape).
- 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.
- 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.
Bump Stopper Replacement
- Replace the bump stopper with the modified one according to MS3 online instructions or the Workshop Manual (section 02-13).
- 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.
|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.
- Remove the front lower control arms (both sides) according to the on-line instructions on MS3 or the Workshop Manual (section 02-13).
- Remove the front lower arm bushing using SSTs 49 G030 797 and 49 B025 004.
- Place the SSTs on the front lower control arm as shown below, then press out the bushing.
- Install the modified bushing using the same SSTs.
- 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.
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.
- 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.
- 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.
- Perform wheel alignment inspection and adjust if necessary.
|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.
|B45G-34-111||Stopper, Bump||2||For Japan built 2.5L
B4YG-34-111 (Service Part) can also be used.
|—||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.
- 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.
- 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.
- Vehicle Type A: Install Protector and Replace Bump Stopper
- Vehicle Type B: Replace Bump Stopper
|Part Number Main Cause||B4YA-34-111, B4YG-34-111, B45A-34-111A or B45G-34-111A|
|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
- Vehicle Type A, B and C: Replace Lower Arm Bushing
|Dealer Sublets Wheel Alignment||Dealer Performs Wheel Alignment|
|Part Number Main Cause||KDY5-34-470A (Lower Arm Bushing)|
|Operation Number / Labor Hours||XXK8NARX / 0.8 Hrs.
(Only replacement of front lower arm bushing)
|XXK8NBRX / 1.8 Hrs.
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Last update on 2020-05-26 / Affiliate links / Images from Amazon Product Advertising API
Last update on 2020-05-26 / Affiliate links / Images from Amazon Product Advertising API