GROUP
BRAKES
DATE

Technical Service Bulletin
SUBJECT:

NOVEMBER 2023

NUMBER
23-BR-004H
MODEL(S)
TUCSON (NX4A)
SANTA CRUZ (NXT)
SANTA FE (TMA)
SANTA FE HYBRID
(TMA HEV)

BRAKE INSPECTION AND SERVICE PROCEDURE

Description: Certain Tucson (NX4A), Santa Cruz (NXT), Santa Fe (TMA), and Santa Fe Hybrid (TMA
HEV) vehicles may exhibit a brake judder condition. This bulletin describes the procedure to inspect
the brakes, resurface or replace and perform a brake burnishing procedure.

Applicable Vehicles:
 2022-2023MY Tucson (NX4A) produced from 07/12/2021 ~ 05/17/2023.
 2022-2023MY Santa Cruz (NXT) produced from 07/12/2021 ~ 05/28/2023.
 2022-2023MY Santa Fe (TMA) produced from 07/12/2021 ~ 05/03/2023.
 2022-2023MY Santa Fe Hybrid (TMA HEV) produced from 10/10/2022 ~ 05/16/2023.

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SUBJECT:

BRAKE INSPECTION AND SERVICE PROCEDURE

Service Flowchart:

Parts Information:
Model

Part Name

Original P/N

New P/N

QTY.

Tucson
(NX4A)

DISC-FRONT BRAKE

51712-L0100

51712-L0100QQH

2

Santa Cruz
(NXT)

DISC-FRONT BRAKE

51712-R5000

51712-R5000QQH

2

Santa Fe
(TMA)

DISC-FRONT BRAKE

51712-R5000

51712-R5000QQH

2

Santa Fe
Hybrid
(TMA HEV)

DISC-FRONT BRAKE

51712-R5000

51712-R5000QQH

2

TSB #: 23-BR-004H

Page 2 of 6
SUBJECT:

BRAKE INSPECTION SERVICE PROCEDURE

SUBJECT:

Service Inspection Guidance:
Model

Part Number

Part Name

Thickness

Tucson
(NX4A)

51712-L0100

DISC-FRONT WHEEL BRAKE

Standard: 30mm (1.18 in)
Service limit: 28mm (1.10 in)

Santa Cruz
(NX4AT)

51712-R5000

DISC-FRONT WHEEL BRAKE

Standard: 30mm (1.18 in)
Service limit: 28mm (1.10 in)

Santa Fe
(TMA)

51712-R5000

DISC-FRONT WHEEL BRAKE

Standard: 30mm (1.18 in)
Service limit: 28mm (1.10 in)

51712-R5000

DISC-FRONT WHEEL BRAKE

Standard: 30mm (1.18 in)
Service limit: 28mm (1.10 in)

Santa Fe
Hybrid
(TMA HEV)

Warranty Information:
Model

Op. Code

Operation

Op.
Time

Causal Part

30DA09R0

FRONT BRAKE DISC
MACHINING (BOTH) &
BURNISHING

1.2 M/H

51712-R5000
(NX4A)

30DA09R1

FRONT BRAKE DISC
REPLACEMENT (BOTH) &
BURNISHING

All

51712-L0100
0.7 M/H (NXT, TMA,
TMA HEV)

Nature
Code

Cause
Code

V64

ZZ5

NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 2: If a part is found in need of replacement while performing this campaign and the affected
part is still under warranty, submit a separate claim using the same repair order.
NOTE 3: This TSB includes Repair validation photos. Op times include VIN, Mileage and Repair
validation photos as outlined in the Digital Documentation Policy.
NOTE 4: The incident parts are subject to callback through the normal Warranty Technical Center
(WTC) parts return process. Claim is subject to debit if the part is not returned.
NOTE 5: If the rotors are machined and burnished and the judder is still present, the rotors may be
replaced under warranty. Dealer must also submit a campaign claim ending in “R0” for the disc
machining and burnishing.

TSB #: 23-BR-004H

Page 3 of 6
SUBJECT:

SUBJECT:

BRAKE INSPECTION AND SERVICE PROCEDURE

Recommended Tool Information:
Tool Name

Part Number

On-car Brake
Lathe PFM 9.0 or
higher version by
PRO-CUT

Contact Bosch

Remark

Figure

Tool is available through
Bosch: 1-866-539-4248

Service Procedure:

STUI
This TSB includes Repair validation photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.
Refer to the applicable vehicle shop manual or TSBs for service details.
Front Brake Rotors – Machining or Replacement

NOTICE
 Always follow the brake lathe manufacturer’s recommendations for proper machining.
 It is recommended to use an “on-car” brake lathe.
 If either rotor’s thickness is under the service limit (before or after machining), replace
both front rotors.
 For more information on brake rotor service, refer to the applicable vehicle shop manual.

TSB #: 23-BR-004H

Page 4 of 6
SUBJECT:

BRAKE INSPECTION SERVICE PROCEDURE

SUBJECT:

1. Measure rotor thickness and determine if rotors
should be machined or replaced. If machined,
measure both BEFORE and AFTER machining
to ensure the brake rotor is within specification.





2.

Refer to the applicable vehicle shop
manual for minimum thickness.
When measuring the brake rotor for
minimum service thickness and runout,
remove all surface contamination and
corrosion to ensure an accurate
measurement.
Measure the thickness at 8 points
(every 45 degrees) around the rotor,
5-10mm or 0.2-0.4” inboard of the outer
edge. Record these measurements on
the repair order sheet.

STUI
Using STUI, take clear photos of freshly resurfaced or new brake rotors (both left
and right) with the last 6 digits of the VIN and the date of repair on a piece of paper.
Photo(s) can be rotors off the vehicle, or on the vehicle. If on the vehicle, submit
both left and right photos individually. See example shown below.
Upload photo(s) to STUI.

TSB #: 23-BR-004H

Page 5 of 6
SUBJECT:

SUBJECT:

BRAKE INSPECTION AND SERVICE PROCEDURE

3. With the brake rotors and calipers fully assembled, inspect the rotor runout.
 Refer to the applicable vehicle shop manual for recommended runout tolerance.
 Mount a dial indicator on the brake rotor 5-10mm or 0.2-0.4” inboard of the outer edge.
Record this measurement on the repair order sheet.
4. Verify that the rotors are free of grease or other contamination. Clean with brake cleaner if
necessary.
5. Tighten all bolts to the torque specification recommended in the appropriate vehicle shop
manual.
6. When re-installing the wheels, tighten the lug nuts in a star pattern to the torque specification in
the appropriate vehicle shop manual. This reduces runout from occurring.
7. After installing the machined rotors or installing new rotors, perform a brake burnishing
procedure as described below.

Brake Burnishing Procedure
1. Drive the vehicle and accelerate to 50 mph.
Apply the brakes using moderate force
(about 0.3g deceleration rate), and slow the
vehicle to 10 mph. This action will take
approximately 6 seconds.
2. With as little cooling time as possible,
repeat this braking event 10 times.

TSB #: 23-BR-004H

Page 6 of 6
SUBJECT: