Jaguar Land Rover bulletin BIG5JUL23_28
What it saysA concern has been identified where certain vehicles are failing to complete existing Software Over The Air (SOTA) updates for the Vehicle Domain Controller (VDC) and PIVI. NHTSA’s full summary ↓
Jaguar Land Rover filed this with NHTSA as a service bulletin dated Jul 21, 2023, received Aug 2, 2023, about the electrical system. It names 21 model years across Land Rover and Jaguar (2020–2023). 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.
One page for every brand it was filed under. Each brand’s bulletins: Land Rover · Jaguar.
Get the next Jaguar Land Rover bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationA concern has been identified where certain vehicles are failing to complete existing Software Over The Air (SOTA) updates for the Vehicle Domain Controller (VDC) and PIVI.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| BIG5JUL23_28 | Service bulletin | Jul 21, 2023 | 10240192 | PDF, 35 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.
Model years it names
Source: as the manufacturer filed themLand Rover 11 model years
Jaguar 10 model years
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Jaguar Land Rover bulletins for one of these models
A weekly email, sent only in a week when Jaguar Land Rover files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 21 model years this bulletin names have filed 465 complaints with NHTSA since 2015. 178 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.
2021 Land Rover Discovery 48V mild hybrid (MHEV). Recurring 12V system failures: repeated depleted/dead 12V batteries and no-start events. The 12V battery has failed and been replaced three times during my ownership (two documented at a franchised Land Rover dealer and an independent shop), plus a prior replacement under the previous…
2021 Land Rover Discovery · Electrical System · filed with NHTSA Jun 4, 2026 · ODI 11742136
The contact stated that while driving at an undisclosed speed, a failure was noticed with a 2023 Jaguar I-Pace operated under the Waymo ride-share program. The vehicle would intermittently stop in the middle of traffic while completing rideshare trips. The contact expressed a concern that the ongoing failure posed a safety hazard.
2023 Jaguar I-Pace · Electrical System · filed with NHTSA Aug 29, 2025 · ODI 11683907
Engine light came on while at a stop light, engine faltered completely and car stalled. Would not restart. Shifted car into Park and tried multiple times to restart, finally got it restarted. Rolled forward per the flow of traffic and engine died again in the middle of the intersection putting me directly in harm’s way.
2020 Land Rover Defender · Electrical System · filed with NHTSA May 9, 2022 · ODI 11463932
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 group172 other manufacturer communications filed against these Jaguar Land Rover models 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 and Jaguar, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Jaguar Land Rover BIG5JUL23_28 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 BIG5JUL23_28 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 BIG5JUL23_28 cover?
The manufacturer filed it against 21 model years across 2 brands (Land Rover and Jaguar): 2023 Jaguar E-Pace, 2022 Jaguar E-Pace, 2021 Jaguar E-Pace, 2023 Jaguar F-Pace, 2022 Jaguar F-Pace, 2021 Jaguar F-Pace and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.