- EV charging
- EV charger
4 RED BLINKS
Tesla 4 RED BLINKS: the internet connection was lost and online features are disabled
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
4 RED BLINKS means the internet connection was lost and online features are disabled in the cited charger family. The deciding observation is whether the local router works and the Wall Connector can see the 2.4 GHz network after any password change. Do not infer a failed part from the code alone.
Safety first
Stop and check this first
- Do not change breaker ratings, current limits fixed by the installer, protective devices or Wi-Fi security to clear a connectivity code.
Safe checks you can perform
- Capture the exact charger, vehicle and pattern
- Run the one deciding check
- Use recurrence as the stop point
Leave these tasks to a qualified professional
- Do not attempt this professional task: Measured handoff for 4 RED BLINKS
What a technician must be able to justify
A technician is coming
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Measured handoff for 4 RED BLINKS
What they doVerify commissioning, supported Wi-Fi band/security and signal at the charger, then inspect firmware/network logs before replacing communications hardware.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
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Capture the exact charger, vehicle and pattern
No special tools
Procedure
Photograph 4 RED BLINKS and record the Tesla model, part/serial number, vehicle model, cable used, charge stage and approximate time. Do not clear the event before those facts are saved.
Do not change breaker ratings, current limits fixed by the installer, protective devices or Wi-Fi security to clear a connectivity code.
Evidence: Troubleshooting a Wall Connector — fault codes
- 2
Run the one deciding check
No special tools
Procedure
Confirm the router is online, remove obvious signal obstructions and, if credentials changed, repeat commissioning on the mobile device to update Wi-Fi settings. Record whether the local router works and the Wall Connector can see the 2.4 GHz network after any password change. Change one condition only.
Do not change breaker ratings, current limits fixed by the installer, protective devices or Wi-Fi security to clear a connectivity code.
Evidence: Troubleshooting a Wall Connector — fault codes
- 3
Use recurrence as the stop point
No special tools
Procedure
If online features return after updating credentials, the fault was on the local connectivity path, not the charging power path. If the router works but four blinks remain, preserve SSID/security and signal details; buying electrical hardware adds no evidence.
Do not change breaker ratings, current limits fixed by the installer, protective devices or Wi-Fi security to clear a connectivity code.
Evidence: Troubleshooting a Wall Connector — fault codes
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- EV charging
- Brand
- Tesla
- Product type
- EV charger
Known code variants
- 4 clignotements rouges Wall Connector
- 4 lampeggi rossi Wall Connector
- 4 parpadeos rojos Wall Connector
- 4 red blinks Wall Connector
- 4 rote Blinkzeichen Wall Connector
- Tesla 4 clignotements rouges
- Tesla 4 lampeggi rossi
- Tesla 4 parpadeos rojos
- Tesla 4 red blinks
- Tesla 4 rote Blinkzeichen
- Tesla Wall Connector 4 RED BLINKS
What it means
Tesla’s official documentation defines 4 RED BLINKS as the internet connection was lost and online features are disabled. That is the protection or controller state, not a universal component diagnosis. If online features return after updating credentials, the fault was on the local connectivity path, not the charging power path. If the router works but four blinks remain, preserve SSID/security and signal details; buying electrical hardware adds no evidence.
Warnings and stop conditions
- Lowsource verified
Do not change breaker ratings, current limits fixed by the installer, protective devices or Wi-Fi security to clear a connectivity code.
Evidence: Troubleshooting a Wall Connector — fault codes
Symptoms and causes
Probable causes · in order
- What the manufacturer code establishesConfirmed
Tesla documents 4 RED BLINKS as a state in which the internet connection was lost and online features are disabled. Keep this meaning scoped to the cited charger family and exact light/code pattern.
Evidence: Troubleshooting a Wall Connector — fault codes
- What the result changes — and what it does not provePossible
If online features return after updating credentials, the fault was on the local connectivity path, not the charging power path. If the router works but four blinks remain, preserve SSID/security and signal details; buying electrical hardware adds no evidence.
Evidence: Troubleshooting a Wall Connector — fault codes
Virtual technician
Does 4 RED BLINKS still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
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Troubleshooting a Wall Connector — fault codes
Tesla · official_doc
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