Range Rover Sport Keyless Entry Not Working or Key Not Detected? It Could Be a Failing Keyless Vehicle Module
If your Range Rover Sport has started ignoring the key in your pocket — doors not unlocking as you approach, the start button doing nothing even with the key inside, or keyless entry working one day and not the next — the cause is very often a failing keyless vehicle module (KVM).
This is one of the more frustrating faults on these cars because it rarely fails outright straight away. It fades in and out, works fine for a few days, then goes quiet again — which means owners often assume it’s the key fob’s battery, or write it off as “one of those things,” right up until the car won’t start at all.
What the Keyless Vehicle Module Actually Does
The KVM is the unit responsible for detecting your key fob’s presence around the car. It constantly listens for the low-frequency signal the key emits and, when it picks it up, tells the rest of the car’s systems — locking, the start button, the immobiliser — that an authorised key is present. It works alongside the body control module and the vehicle’s antennas, which are usually built into the door handles, bumpers, and around the cabin.
When the KVM starts to fail, it doesn’t always fail completely in one go. More often the range and reliability of detection degrade first — the car might need the key held right against a specific spot to notice it, or only pick it up from certain angles. Left alone, that degradation tends to get worse until the module stops detecting the key at all.
Common Symptoms of a Dying KVM
Owners typically report a combination of:
- Doors not unlocking automatically as you walk up with the key
- Having to be right next to the handle, or try several times, before it unlocks
- The start button doing nothing, or intermittently refusing to recognise the key is inside
- Keyless locking/unlocking working from some directions but not others
- The fault appearing occasionally at first, then becoming a daily problem
- In more advanced cases, the car not starting at all despite the key being present
Because these symptoms overlap with a flat key fob battery, a lot of owners replace the battery, find it makes no difference or only briefly helps, and are left unsure what’s actually wrong.
Why It’s Easy to Misdiagnose
A dying KVM can look like several other faults — a weak key battery, a body control module issue, or even a wiring fault in a door handle antenna. Because the module sits within the wider security and locking network, a proper diagnosis needs to actually interrogate the module and confirm where the signal is dropping, rather than guessing and swapping parts.
This is also why some owners end up replacing a key fob or having a battery changed, spending money without actually fixing the underlying problem.
How We Fix It — At Your Home or Workplace
Our mobile engineers cover England, Wales and Scotland, and come to you — no need to have the car recovered anywhere:
- Diagnose the fault to confirm it’s the keyless vehicle module and not the key, antennas, or body control module
- Remove the faulty KVM
- Fit a replacement module
- Programme the new module into the vehicle’s security and locking system
- Confirm full communication between the KVM, body control module, and remaining security modules before handover
You’re left with reliable keyless detection and a car that starts consistently, without needing to fumble the key against a specific spot.
Why It’s Worth Fixing Early
Intermittent detection faults tend to get worse, not better. What starts as an occasional annoyance can progress to the car refusing to start altogether — often at the worst possible moment. Catching it while it’s still intermittent means a straightforward mobile fix rather than being stranded and needing recovery.
Related Faults We Also See on Range Rover Sport and Jaguar Models
Because these models share much of the same electrical architecture, related issues we regularly deal with include:
- Body control module faults, often caused by water ingress in the footwell
- Keys not detected after a battery disconnection
- Lost keys and spare key programming
If your keyless fault is accompanied by other odd electrical behaviour, it’s worth having the wider system checked during the same visit.
Book a Mobile Visit
If your Range Rover Sport’s keyless entry is unreliable, or the car is struggling to detect the key at all, contact National Car Keys. We’ll send a mobile engineer to diagnose and resolve it on site.
Call 07900 224444 today to book a visit, or fill in the form below.
