Lexus bulletin 23LD03
What it saysRL: The subject vehicles are equipped with a Data Communication Module (DCM) which supports the use of connected service utilities such as Roadside Assistance, Automatic Collision Notification, and Emergency Assistance… NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Oct 24, 2023, received Jun 26, 2023, about the electrical system — 2 documents under this number: 23LD03_Dealer Pa and 1 more. It names 1 model year (2023). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationRL: The subject vehicles are equipped with a Data Communication Module (DCM) which supports the use of connected service utilities such as Roadside Assistance, Automatic Collision Notification, and Emergency Assistance (SOS). These connected services are available as a free trial subscription when the vehicle is purchased. Due to a supplier shipping error, there is a possibility that incorrect, not activated DCMs were installed in the subject vehicles, which causes connected services to be unavailable.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23LD03_Dealer Pa | Service bulletin | Oct 24, 2023 | 10245482 | not found |
| 23LD03 | Service bulletin | May 25, 2023 | 10238148 | not found |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
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Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 66 complaints with NHTSA since 2015. 10 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
My RX350 experienced malfunction of the Advanced Driver Assistance Systems (ADAS). Messages regarding the malfunction of the ADAS first appeared around mid-August 2024. Upon inspection during the week of August 27 2024, the Lexus dealer, Akron-Canton of Lexus, indicated that the malfunction was caused by rats chewing on the soy-based…
2023 Lexus RX · Forward Collision Avoidance · filed with NHTSA Sep 4, 2024 · ODI 11612488
On at least 7 occasions the driver was TRAPPED inside the vehicle. The car failed to start and the doors and windows locked. If the driver had not had a cell phone to make an emergency call he would have been locked inside until someone discovered the problem.
2023 Lexus RX · Electrical System · filed with NHTSA Dec 26, 2025 · ODI 11707085
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group47 other manufacturer communications filed against the Lexus RX under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Lexus list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| L-SB-0011-26 | Service bulletin | May 7, 2026 | A 12V auxiliary battery with increased capacity has been released as an optional replacement. |
| L-SB-0057-22 OBSOLETE | Service bulletin | Feb 2, 2026 | OBSOLETE NOTICE February 2, 2026: This bulletin is now obsolete. Please see L-SB-0004-26. |
| L-SB-0004-26 | Service bulletin | Jan 23, 2026 | Some 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation System, require a Special Service Tool (SST) USB flash d… |
| 25LD01 | Service campaign | Nov 13, 2025 | The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, wat… |
| 23LE05 | Service campaign | Sep 26, 2025 | Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Lexus New Vehicle Limited Warranty for 4 years or 50,00… |
| L-TT-0326-23 REV2 | Service bulletin | Aug 19, 2025 | Some customers may experience operational difficulties with some telematics features which they cannot resolve on their own. These resources… |
| L-SB-0043-23 REV1 | Service bulletin | Jun 13, 2025 | The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The… |
| L-SB-0024-25 | Service bulletin | Apr 18, 2025 | Some 2023 – 2025 model year RX 350, RX 350h, RX 500h, and 2024 – 2025 model year TX 350, TX 500h, and TX 550h+ vehicles may exhibit a condit… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Lexus, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Lexus 23LD03 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 23LD03 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Toyota warranty extension on file lists the ones Toyota has filed.
Which vehicles does 23LD03 cover?
The manufacturer filed it against 1 model year: 2023 Lexus RX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.