The Engine Won't Turn Off at Lights Anymore
You bought a 2023 CR-V partly for the fuel savings from auto start-stop. But lately, the engine keeps running at red lights when it used to shut off. The system seems to be on strike. What gives?
Before you head to the dealer, understand that auto start-stop has many conditions that must be met before it activates. It's often not broken—it's just being cautious.
Signs Something Might Be Wrong
- "A" button is on but engine never stops
- "Auto Stop" never appears on the dash
- System used to work but stopped
- Works sometimes but not consistently
- Battery warning light accompanies the issue
Conditions That Disable Start-Stop
Auto start-stop won't activate if any of these conditions exist:
Battery Related
- Battery state of charge too low
- Battery temperature too cold or hot
- Battery is old or weak
- Recently jump-started
Temperature Related
- Engine not fully warmed up
- Climate control demanding high output
- Outside temperature extremely hot or cold
- Cabin not yet at set temperature
Driving Related
- Stop was too brief
- Foot not firmly on brake
- Steering wheel turned (preparing to maneuver)
- Hood is open (for safety)
- Defrost is active
System Related
- Battery sensor malfunction
- Brake vacuum insufficient
- Transmission not fully warmed up
- Sensor detecting trailer connection
When It's Actually Broken
If start-stop NEVER works, even when:
- Engine is fully warm
- A/C is off or at low demand
- Battery is charged and healthy
- Weather is moderate
- You're stopped for 30+ seconds with foot firmly on brake
...then there may be a system fault worth investigating.
Common Actual Failures
Weak or Failing Battery
The AGM battery in start-stop vehicles is critical. A battery that's lost capacity will disable the system to preserve starting ability.
Battery Sensor Fault
The intelligent battery sensor (IBS) monitors battery state. If it fails, the system has no data and stays disabled.
Starter Motor Issues
Start-stop starters are designed for frequent cycling. A failing starter triggers system disable.
Repair Costs
- Battery test/diagnosis: $0 - $50
- AGM battery replacement: $200 - $400
- Battery sensor replacement: $100 - $250
- Starter motor: $400 - $700
- System software update: $0 - $150
Warranty Coverage
The 2023 CR-V's start-stop system is covered under the 3-year/36,000-mile basic warranty. If the system genuinely isn't functioning despite conditions being met, Honda should diagnose and repair it.
Honest Reality
Many owners find start-stop more annoying than useful and disable it. If yours isn't working, you're getting the experience those owners pay aftermarket modules to achieve. Before spending money on diagnosis, ask yourself: do you actually miss it?