REC 002-23 – Driveshaft Separation – 2021 Xos RM01, SA01, & 2021-2022 SV05

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3/23/23, 11:57 AM Xos Trucks Mail – *Important* REC-002-23 Driveshaft Separation Technical Instructions
https://mail.google.com/mail/u/0/?ik=23a8049c40&view=pt&search=all&permthid=thread-f:1761167551922911792&simpl=msg-f:1761167551922911792 1/1
*Important* REC-002-23 Driveshaft Separation Technical Instructions
1 message
Thu, Mar 23, 2023 at 7:04 AM
Good Morning,
Technical Instructions for the Driveshaft Separation recall, REC-002-23 have been published on the Xosphere. See link
below and attached PDF. Please review the entire document and let me know if you have any questions or concerns.
Currently parts are limited and priority is being given for vehicles already in customer use. Parts will be shipped to
dealers when available. If you have a pending sale on a vehicle in your inventory please let me know and I will
have the parts sent to your dealership.
https://xostrucks.zendesk.com/hc/en-us/articles/15103012683667-Rec-002-23-Driveshaft-Separation-Technical-
Instructions
As always if you need help or technical assistance please reach out to me or the Xos Support Team at
support@xostrucks.com or (855) 909-4407
Please be reminded that under 49 U.S.C. § 30112(a)(3), it is illegal for a manufacturer to sell, offer for sale, import, or
introduce or deliver into interstate commerce, a motor vehicle or item of motor vehicle equipment that contains a safety
defect once the manufacturer has notified NHTSA about that safety defect.
Thank you,
Dealer Sales and Support Manager
xostrucks.com
Los Angeles, CA
REC-002-23 Technical Instructions.pdf
10503K
Xos Safety Recall REC-002-23
Driveshaft Separation
IMPORTANT – Read this document carefully and completely to understand the
applicability of this recall and the related repair procedure(s). Failure to follow the
instructions correctly may result in incomplete repairs and duplication of efforts.
Repair Overview:
1. Confirm VIN is applicable under this Safety Recall.
2. Perform vehicle inspections to determine necessary repairs.
a. Confirm EPB Rotor to be unpainted for reuse.
3. Perform applicable repairs.
NOTE: All impacted vehicles must undergo EPB Rotor fasteners complete
replacement. Fasteners cannot be reused.
4. Submit warranty claim to close recall for applicable VIN.
Vehicle Applicability:
Model Year Model Body Application
2021 – 2022
2021
SV05
RM01
SA01
Morgan Olson
CITE
Utilimaster
Parts Information:
Repair Type Part Number Part Name QTY
Complete EPB Rotor
Fastener Replacement
Hardware
HD20-HH-M0111 Steel Hex Head Screw Class 10.9, M14 x
2 mm Thread, 30 mm Long
10
HD40-HH-M0010 Washer, Flat, Zinc Plated Steel, M14
28OD/15ID
10
HD20-HH-M0112 Alloy Steel Flange Bolt Class 10.9 Steel
Screws, M8 x 1.25mm, 30mm Long 8
VN00-PB-N0339 LOCTITE 243 ADHESIVE 1
N/A Torque Marker Pen 1
EPB Rotor Surface
Cleaning
N/A Brake Parts Cleaner 1
EPB Rotor Replacement –
See inspection criteria
RM01-MB-M0044 EPBv2 Rotor 1
Warranty Information:
Model
Operation
Code
Operation Description Time (Hours)
SV05
04086
Complete EPB Rotor Fastener
Replacement Hardware 1
04096 EPB Rotor Reuse “Tapping & cleaning” 0.5
04106 EPB Rotor Replacement Included with
04086
Required Special Tools & Equipment:
Tool/Equipment
Description Specification Example
Wrench M8 Wrench
Wrench M14 Wrench
Torque Wrench
50 Nm Rated Torque
Wrench
Torque Wrench
200 Nm Rated Torque
Wrench
Tap Tool Threaded Hole Tap Tool
EPB Rotor Inspection
1. Visually inspect EPB Rotor.
2. Confirm all surfaces of the rotor to be completely unpainted.
a. If the surface is unpainted, the rotor will be reused after cleaning and tapping.
b. If the surface is painted, the rotor must be discarded and replaced with an
unpainted one (RM01-MB-M0044).
Figure 1 – Painted Rotor (Incorrect) Figure 2 – Unpainted Rotor (Correct)
Vehicle Rework Procedure:
1. Disconnect the Driveshaft yoke from the EPB rotor and discard the used M8 bolts. If
the vehicle is serviced in the field and is not lifted, carefully rest the driveshaft on the
ground.
2. Disconnect the EPB rotor from the motor flange yoke and discard all the used M14
bolts, lock washers and flat washers.
3. Confirm that mating surfaces on both sides of the rotor are UNPAINTED. If the rotor is
painted, please swap the rotor to a new and unpainted one (RM01-MB-M0044). Refer
to the rotor inspection procedure above.
4. Confirm that the yoke area under and around the bolt heads is bare metal and clean
of paint or dirt.
5. Clean the surfaces of the rotor with brake cleaner, even if the rotor is new, to remove
any anti-rust liquid residue.
6. Tap and clean the threaded holes on the rotor on both sides to remove any Loctite
residue that may be present. Skip this step if the rotor is being replaced.
7. Install washers (HD40-HH-M0010) on new bolts (HD20-HH-M0111-A).
8. Apply TWO DOTS of LOCTITE 243 (VN00-PB-N0339) halfway down the threads on
opposite sides, one on each side, on the new bolts (HD20-HH-M0111-A)as shown
below.
9. Tighten in a star pattern to fasten motor flange yoke to rotor using the appropriate
wrench. Note: there are no lock washers installed in the reassembly. The following
figure exhibits the star pattern to fasten the bolts.
10. Torque the bolts to 200 Nm using the appropriate torque wrench following the above
star pattern and then mark them using the torque marking pen.
11. Apply TWO DOTS of LOCTITE 243 (VN00-PB-N0339) halfway down the threads on
opposite sides, one on each side, on all new bolts (HD20-HH-M0112-A). The M8 bolts
must be a 10.9 grade.
12. Fasten the driveshaft yoke to the rotor while following the star pattern for 8 bolts.
13. Torque the bolts to 50 Nm using the appropriate torque wrench while following the
above exhibited star pattern and then mark them.
14. Mark this process as completed on the VIN log.

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NHTSA Recall No. 23V145
For updated information, please visit NHTSA.gov/recalls
ㅡ
Xos
3550 Tyburn St.
Los Angeles, CA 90065
www.xostrucks.com
2021-2022 Xos SV05
2021 Xos RM01 and SA01
Driveshaft Separation
NHTSA Recall No. 23V145
Xos Recall No. REC-002-23
Month Day, 2023
IMPORTANT SAFETY RECALL
This notice applies to your vehicle, VIN .
Dear Valued Xos Vehicle Owner:
This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Xos, Inc. has decided that a defect which relates to motor vehicle safety may exist in your vehicle, with the VIN shown above. We apologize for this situation and want to assure you that, with your assistance, we will correct this condition. Our commitment is to provide you with the highest level of service and support.
What is the issue?
During the specified production period, the torque rating specification applied to the bolts connecting the electronic parking brake rotor to the driveshaft was too low. As a result, there is a risk that the driveshaft may separate from the vehicle.
What is the risk?
In the event of driveshaft separation, customers may experience loss of motive power while driving, increasing the risk of a crash.
What will Xos do?
Xos will inspect the potentially impacted vehicles and, as necessary, replace the bolts and related hardware free of charge. Repairs will take an estimated 90 minutes to complete.
What should you do?
The Xos Customer Experience team will contact you to schedule your inspection and repair as necessary. Please feel free to reach out to support@xostrucks.com or give us a call at 1-855-909-4407, if you have any questions. Please note that Federal law requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days.
Do you have other questions?
If you have further questions, please call Xos Customer Experience at 1-855-909-4407. For additional information please visit NHTSA.gov/recalls. If you believe that Xos has failed or is unable to remedy the defect within a reasonable time or without charge, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue S.E., Washington, D.C. 20590, or call the toll free Vehicle Safety Hot Line at 1-888-327-4236 (TTY: 1-800-424-9153), or visit safercar.gov.
Thank you for your attention to this important matter. The quality and safety of your vehicle is of the utmost importance to us.

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3/17/23, 11:09 AM Xos Trucks Mail – Dealer Notice | REC 002-23 | NHTSA Recall 23V145 | Driveshaft Separation
https://mail.google.com/mail/u/0/?ik=23a8049c40&view=pt&search=all&permthid=thread-f:1760544248430676143&simpl=msg-f:1760544248430676143 1/1
Dealer Notice | REC 002-23 | NHTSA Recall 23V145 | Driveshaft Separation
1 message
Thu, Mar 16, 2023 at 9:57 AM
Xos Recall REC 002-23 | NHTSA Recall 23V145 | Driveshaft Separation
Xos is recalling certain 2021 RM01, SA01 and 2021-2022 SV05 vehicles. The bolts connecting the electronic parkingbrake rotor to the driveshaft may have been improperly tightened. Loose bolts may allow the driveshaft to separate,causing a loss of drive power and increasing the risk of crash.
Xos and authorized Xos Dealers will replace the bolts and related hardware, free of charge. Owner notification letters areexpected to be mailed to customers by Xos the week of March 28, 2023.
This recall applies to the following VINs in your inventory:
Please be reminded that under 49 U.S.C. § 30112(a)(3), it is illegal for a manufacturer to sell, offer for sale, import, orintroduce or deliver into interstate commerce, a motor vehicle or item of motor vehicle equipment that contains a safetydefect once the manufacturer has notified NHTSA about that safety defect.
Thank you,
Dealer Sales and Support Manager
xostrucks.com
Los Angeles, CA

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-145
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Xos, Inc.
MAR 03, 2023 NHTSA Recall No. : 23V-145 Manufacturer Recall No. : REC 002-23 Manufacturer Information :
Manufacturer Name : Xos, Inc.
Address : 3550 Tyburn St.
Los Angeles CA 90065 Company phone : 316-1890
Population :
Number of potentially involved : 275 Estimated percentage with defect : 100 %
Vehicle Information :
Vehicle 1 : 2021-2021 Xos RM01
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR
Descriptive Information : The recall population was determined by production records. The recalled products differ from other products that were not included in the recall because, during the specified production period, an incorrect torque specification may have been applied to the bolts which connect the driveshaft to the electronic parking brake. The recall population includes one (1) Xos RM01 chassis as a potentially involved vehicle.
Production Dates : DEC 23, 2021 – DEC 23, 2021
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2022 Xos SV05
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR
Descriptive Information : The recall population was determined by production records. The recalled products differ from other products that were not included in the recall because, during the specified production period, an incorrect torque specification may have been applied to the bolts which connect the driveshaft to the electronic parking brake. The recall population includes 254 Xos SV05 vehicles as potentially involved vehicles.
Production Dates : DEC 23, 2021 – FEB 13, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-145 Page 2 Vehicle 3 : 2021-2021 Xos SA01
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : NR
Descriptive Information : The recall population was determined by production records. The recalled products differ from other products that were not included in the recall because, during the specified production period, an incorrect torque specification may have been applied to the bolts which connect the driveshaft to the electronic parking brake. The recall population includes twenty (20) SA01 vehicles as potentially involved vehicles.
Production Dates : FEB 21, 2022 – NOV 04, 2022
VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect :
Description of the Defect : During the specified production period, the torque rating specification applied to the bolts connecting the electronic parking brake rotor to the driveshaft was too low. As a result, there is a risk that the driveshaft may separate from the vehicle.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : In the event of driveshaft separation, customers may experience loss of
motive power while driving, increasing the risk of a crash.
Description of the Cause : The torque rating applied to the bolts connecting the electronic parking brake rotor to the driveshaft was misidentified due to an oversight in the engineering process. Identification of Any Warning NR
that can Occur : Involved Components : Component Name 1 : Driveline Assembly Component Description : Medium Duty, WB178 Component Part Number : RM01-MB-A0028-A Component Name 2 : Flange Yoke Component Description : NR
Component Part Number : VN00-MB-M0003-A The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-145 Page 3 Supplier Identification : Component Manufacturer
Name : Xos, Inc.
Address : 3550 Tyburn St.
Los Angeles California 90065 Country : United States Chronology :
On February 9, 2023, Xos engineering initiated an investigation into reports of drive shaft separations involving the subject vehicles. A review of service records indicated that there had been four reports involving three vehicles (one owner reported a second occurrence on the same vehicle). On February 15, 2023 the engineering team concluded that the torque specification applied to the bolts connecting the driveshaft to the electronic park brake was too low for the application and identified the proper torque specification. On February 24, 2023, the topic was presented to Xos’s Product Safety Committee. Based upon the information presented, the Product Safety Committee decided to initiate a recall to address this condition. To date, there have been four reports between October 13, 2022 and February 8, 2023 related to this issue, with no reports of accidents or injuries related to this condition. Description of Remedy :
Description of Remedy Program : The affected bolts and related hardware on the affected vehicles will be
replaced at no cost to customers. All of the subject vehicles remain under the manufacturer’s warranty. Therefore, pursuant to 49 CFR 577.11(e), Xos requests an exemption from the reimbursement plan requirements. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : The recall remedy component can be distinguished from the recalled component because the remedy component will be installed at the correct torque specification.
Vehicles shipped after February 13, 2023 include the correct torque rating specification on the subject component. Recall Schedule :
Description of Recall Schedule : Customers and Dealers will be notified of the pending voluntary recall
campaign beginning in March 2023. Copies of communications will be provided when available.
Planned Dealer Notification Date : MAR 28, 2023 – MAR 28, 2023
Planned Owner Notification Date : MAR 28, 2023 – MAR 28, 2023 The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-145
Page 4
The information contained in this report was submitted pursuant to 49 CFR §573
* NR – Not Reported

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