Certain 2017 to 2019 Land Rover vehicles equipped with TDV6 3.0L Diesel engines and Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports the monitor readiness status as not supported.
full bulletin at NHTSA ↗2018 Land Rover Discovery electrical problems
moderate 5 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
5
Recalls
0
Avg fix
$850
When does it fail?
Of the 5 electrical complaints filed for the 2018 Land Rover Discovery, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Due to time required to complete in shop vehicle set up and workflow for Audio loss, it has been found that workflow may provide false result if IMC is not in a faulted state when workflow is run to identify potential Polar Switch Firmware fault.
full bulletin at NHTSA ↗Startup battery keeps draining / Vehicle will not start
full bulletin at NHTSA ↗Weather and Park & Pay Apps disappear after PIVI update
full bulletin at NHTSA ↗Battery low warning displayed on instrument cluster and/or no-start
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 3 most recent
The key fob is consistently has issues with starting the vehicle. Key will not unlock doors when touching the handle. Vehicle will not start when parked. This is unsafe because I have been stranded in public places in the cold and the vehicle would not start. The dealership was actually no assistance. Changing batters did not work. Reprogramming keys did not work. They promised to order a new key…
Water began leaking into car from front windshield while driving on 11/25/2025. Air whistling noises present also. Safety risk of injury from windshield failure. Repair person says risk for windshield coming off when driving or if involved in collision. Possibly related to recall N221 Land Rover Discovery SE 2018. Had Koch 33 perform assessment and they reproduced water and air leak and…
Car went black (all systems shut off) and i started to roll in the CVS parking lot when i was trying to drive in and Park. The brakes and nothing was engaging. IT happened so fast I was able to stop the vehicle and I am not sure how but may have just turned the shifter from drive to park... I took the vehicle in for service (a number of issues) and i forgot to mention this, I was told the…
Had electrical trouble with your 2018 Land Rover Discovery?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2018 Land Rover Discovery?
It's a documented issue but not catastrophic. 5 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 5 complaints filed, electrical issues most often appear around 61,478 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Land Rover/Discovery.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.