Land Rover bulletin BIG5OCT23_31
What it saysA concern has been identified on certain vehicles where the battery heater coolant hoses may have been incorrectly installed. NHTSA’s full summary ↓
Land Rover filed this with NHTSA as a service bulletin dated Oct 16, 2023, received Nov 3, 2023, about the electrical system. 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 communicationA concern has been identified on certain vehicles where the battery heater coolant hoses may have been incorrectly installed.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| BIG5OCT23_31 | Service bulletin | Oct 16, 2023 | 10244857 | PDF, 79 KB |
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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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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 58 complaints with NHTSA since 2015. 21 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.
The contact owns a 2023 Land Rover Range Rover Velar. The contact stated that while attempting to reverse, the steering wheel became inoperable. The steering wheel became very stiff and was difficult to turn. The ADAS and power steering warning lights were illuminated.
2023 Land Rover Range Rover · Electrical System · filed with NHTSA Sep 8, 2026 · ODI 11762729
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 group102 other manufacturer communications filed against the Land Rover Range Rover under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Land Rover list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SSM76510 - 23SEP26 | Other | Sep 23, 2026 | Diagnostic Trouble Code (DTC) stored in the Battery Charging Control Module (BCCM). The DTC may be unable to be cleared. |
| SSM76510 - 16SEP26 | Other | Sep 16, 2026 | Diagnostic Trouble Code (DTC) stored in the Battery Charging Control Module (BCCM). The DTC may be unable to be cleared. |
| D103 | Emissions | Sep 8, 2026 | D103 Emission Recall Owner Letter |
| D101 | Emissions | Sep 8, 2026 | D101 Emission Recall Owner Letter |
| D100 | Emissions | Sep 8, 2026 | D100 Emission Recall Owner Letter |
| SSM76110 - 21AUG26 | Other | Aug 22, 2026 | Vehicles on display e.g. in a showroom whilst being supported by a showroom 12v support unit, these vehicles require an additional fuse to b… |
| N955 Range Rover 21AUG26 | Other | Aug 21, 2026 | A quality concern has been identified where there may be a missing fixing on the Mild Hybrid Electric Vehicle (MHEV) battery harness which i… |
| SSM76110 - 19AUG26 | Other | Aug 20, 2026 | Vehicles on display e.g. in a showroom whilst being supported by a showroom 12v support unit, these vehicles require an additional fuse to b… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Land Rover, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Land Rover BIG5OCT23_31 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 BIG5OCT23_31 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.
Which vehicles does BIG5OCT23_31 cover?
The manufacturer filed it against 1 model year: 2023 Land Rover Range Rover. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.