When your diesel truck won’t start, lights are dim, or electrical systems fail, you need answers fast. AZ Mobile Diesel Repair provides on-site electrical system diagnostics and battery service across Phoenix Metro with 30-60 minute response times.
Our mobile technicians carry jump packs, batteries, alternators, starters, fuses, relays, and diagnostic equipment. We diagnose electrical failures, replace batteries, install alternators/starters, repair wiring, and get your truck running again—all at your location.
What’s Included in Our Electrical Service
Battery Testing & Replacement
Load test batteries, replace dead cells, and install new batteries with proper cables
Alternator Replacement & Testing
Test alternator output, replace failed alternators, and verify charging system operation
Starter Motor Service
Replace faulty starters, repair connections, and diagnose starting circuit issues
Wiring Repairs & Troubleshooting
Trace electrical shorts, repair damaged wiring, and fix connector issues
Fuse & Relay Replacement
Test and replace blown fuses, failed relays, and circuit breakers
Lighting System Repairs
Fix headlights, taillights, marker lights, and turn signals
✓ Most electrical failures can be diagnosed and repaired roadside—no need to tow to a shop or wait days for service.
Common Electrical Problems We Fix
Our mobile electrical technicians handle every type of diesel truck electrical issue:
Dead Battery / Won’t Start
Failed batteries, corroded terminals, or parasitic draw. We jump-start, test, and replace batteries to get you running immediately.
Failed Alternator
Battery warning light on, dim lights, or battery draining while driving. We test alternator output and replace failed units on-site.
Starter Motor Issues
Clicking sound, slow cranking, or no response when turning the key. We diagnose starter failures and install replacements roadside.
Electrical Shorts or Wiring Damage
Blown fuses, intermittent failures, or burned wires. We trace shorts, repair damaged harnesses, and restore proper electrical connections.
Lights Not Working
Headlights, taillights, turn signals, or marker lights inoperative. We diagnose bulb, fuse, wiring, or switch failures and restore proper lighting.
Parasitic Battery Drain
Battery dies overnight or after sitting. We test for current draw and identify components draining the battery when the truck is off.
Why Choose AZ Mobile Diesel Repair for Electrical Service
Fast Mobile Response
30-60 minute average response across Phoenix Metro. When you’re stranded with electrical failure, we get there fast and get you running.
Professional Diagnostics
We use multimeters, circuit testers, and diagnostic tools to accurately diagnose electrical faults—not guesswork.
Parts in Stock
We carry common batteries, alternators, starters, fuses, relays, and wiring supplies on our service trucks for same-day repairs.
Get Mobile Electrical Service Now
Electrical Failure? Dead Battery? We’re On Our Way.
Call now for mobile electrical and battery service. Average response time: 30-60 minutes.
(602) 456-9071
Open 7 AM - 7 PM Daily for emergency electrical service across Phoenix Metro