4008 N Ravenswood Ave, Chicago, IL 60613
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EV Charging System Maintenance

Onboard charger repair • Charging port service • Fast charging optimization

Complete Charging System Solutions

Your EV's charging system is critical for reliable operation. Our expert technicians provide comprehensive charging system diagnostics, repair, and optimization services for all charging levels and connector types.

From onboard charger failures to charging port damage, we handle all aspects of EV charging system maintenance. We service Tesla Supercharger connectivity, CCS, CHAdeMO, and J1772 systems with manufacturer-approved procedures.

⚠️ Signs Your Charging System Needs Service:

  • • Slow or inconsistent charging speeds
  • • Charging port won't secure properly
  • • Error messages during charging
  • • Charging stops unexpectedly
  • • Physical damage to charging port

Charging Service Pricing

Charging System DiagnosticStarting at $149.99
Charging Port Replacement$599.99
Onboard Charger Repair$1,299.99
Charging Cable Replacement$899.99
Complete Charging System RebuildFrom $2,999.99

Fast Track Service: Same-day charging repairs available for most issues!

Comprehensive Charging Services

From Level 1 to DC Fast Charging systems

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Charging Port Service

Inspection, cleaning, and replacement of charging ports and connectors

Onboard Charger Repair

Diagnostics and repair of internal AC to DC conversion systems

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DC Fast Charging Support

CCS, CHAdeMO, and Tesla Supercharger connectivity troubleshooting

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Charging Cable Repair

Mobile connector and charging cable inspection and replacement

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Charging Optimization

Power management calibration for optimal charging speeds

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Safety System Testing

Ground fault and safety interlock system verification

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Thermal Management

Charging system cooling and temperature monitoring service

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Communication Protocol

Vehicle-to-charger communication system diagnostics

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Preventive Maintenance

Regular charging system inspection and maintenance programs

Charging Standards We Service

Tesla Connector

Type:Proprietary
Max Power:Up to 250kW

Common Vehicles:

  • Tesla Model S/X/3/Y
  • Tesla Semi
  • Tesla Cybertruck

Key Features:

  • Supercharger network
  • Destination charging
  • Mobile connector

CCS (Combined Charging)

Type:Industry Standard
Max Power:Up to 350kW

Common Vehicles:

  • BMW i4/iX
  • Ford Mustang Mach-E
  • Hyundai IONIQ

Key Features:

  • AC & DC combined
  • Fast charging
  • Wide compatibility

CHAdeMO

Type:Japanese Standard
Max Power:Up to 62.5kW

Common Vehicles:

  • Nissan Leaf
  • Mitsubishi Outlander PHEV
  • Kia Soul EV

Key Features:

  • Bidirectional charging
  • Established network
  • Vehicle-to-grid capable

J1772 (Level 1 & 2)

Type:North American AC
Max Power:Up to 19.2kW

Common Vehicles:

  • Most EVs (with adapter)
  • Public AC charging
  • Home charging

Key Features:

  • Universal AC standard
  • Home installation
  • Public access

Case Study: Tesla Model 3 Charging System Repair

Restoring fast charging capability after onboard charger failure

Before Service

AC Charging Speed:3.7kW (reduced)
DC Fast Charging:Not working
Charging Efficiency:78%
Full Charge Time:18+ hours

Customer Issues:

  • • Cannot use Supercharger network
  • • Extremely slow home charging
  • • Charging stops unexpectedly
  • • "Charging fault" error messages

After Service

AC Charging Speed:11.5kW (restored)
DC Fast Charging:Up to 250kW
Charging Efficiency:96%
Full Charge Time:6 hours (AC)

Services Performed:

  • • Onboard charger module replacement
  • • Charging port connector repair
  • • Thermal management system service
  • • Communication protocol calibration
  • • Safety system testing and verification

Professional Charging System Equipment

Diagnostic Tools

  • 🔧Multi-protocol charging testers
  • 🔧Power quality analyzers
  • 🔧Insulation resistance testers
  • 🔧Ground fault circuit analyzers
  • 🔧Communication protocol analyzers
  • 🔧Thermal imaging equipment

Repair Capabilities

  • High-voltage charging system service
  • Connector and cable assembly
  • Onboard charger rebuild facility
  • Safety interlock system testing
  • Power electronics repair
  • Environmental testing chambers

Charging System Service FAQ

Why is my EV charging slower than usual?

Slow charging can be caused by onboard charger issues, temperature management problems, charging port damage, or power supply issues. Our diagnostics will identify the exact cause.

Can you repair charging ports for all EV brands?

Yes, we service all charging standards including Tesla connectors, CCS, CHAdeMO, and J1772. We use OEM parts and follow manufacturer procedures.

How much does onboard charger replacement cost?

Onboard charger replacement typically costs $1,200-$3,500 depending on the vehicle. Tesla Model 3/Y: $1,500-$2,000, luxury vehicles: $2,500-$3,500.

Do you install home charging stations?

We focus on vehicle charging system repair, but we can recommend certified electricians for home charging station installation and can service your vehicle's charging compatibility.

How often should charging systems be serviced?

We recommend annual charging system inspection or if you notice reduced charging speeds, connection issues, or error messages during charging.

Schedule Your Charging System Service

Professional charging diagnostics, repair, and optimization services

Request Charging System Maintenance & Repair

Booking requests are now handled on our Contact page.

Reach out and our team will confirm your appointment quickly.

Prefer email? Write us at contact@jandaauto.repair

Restore Fast, Reliable EV Charging

Expert charging system diagnostics and repair services

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