The 2011 Ford Explorer came from the factory with Electric Power Steering (EPS) — no hydraulic pump, no fluid, no belt-driven system. That's good news for EV conversion: EPS runs on 12V power, not engine vacuum. But when the factory EPS fails — and it does fail — you need a replacement solution that works without the Explorer's original CAN bus network.
Here's what every Explorer owner converting to EV needs to know about the EPS system, including the 7 most common failure signs and 3 ways to fix it.
7 Warning Signs Your 2011 Explorer EPS Is Failing
| # | Symptom | What It Means |
|---|---|---|
| 1 | "Power Steering Assist Fault" on the dash | ECU detected a sensor or motor circuit error |
| 2 | Steering suddenly gets heavy while driving | EPS motor or torque sensor has failed mid-trip |
| 3 | "Service Power Steering Now" message | Usually an electronic fault, not mechanical |
| 4 | Intermittent steering loss that returns after restart | ECU overheating or voltage drop to the EPS module |
| 5 | "Service AdvanceTrac" warning alongside EPS light | EPS and stability control share data — one failure triggers the other |
| 6 | Steering feels uneven — light one moment, heavy the next | Torque sensor signal degradation |
| 7 | EPS fuse blown repeatedly | Short circuit in the EPS motor or control module wiring |
EPS Fuse Location: 2011 Ford Explorer
Before replacing any parts, check the fuse. The EPS fuse is in the engine compartment power distribution box. It's labeled EPS or Steering — typically a 40A or 60A fuse depending on the trim level.
If the fuse is good, move to voltage checks. The EPS module needs stable 12V+. A weak battery or loose ground at the chassis connection is a common cause of intermittent EPS failure.
3 Ways to Fix Your Explorer's EPS for EV Conversion
Option 1: Replace Factory EPS Rack (OEM-style)
A new steering rack from Ford costs $1,100-$1,800. A refurbished unit runs $600-$900. This restores factory function — but the replacement rack still depends on the Explorer's CAN bus. If your EV conversion uses a different BMS or controller that doesn't speak Ford's CAN protocol, the new rack may not work either.
Option 2: Use CMVTE Standalone EPS Kit (Recommended for EV Builds)
CMVTE's 12V EPS kit is a self-contained aftermarket system that does not require CAN bus communication. It includes:
- EPS motor and controller unit
- Torque sensor
- Wiring harness with relay and fuse
- Mounting bracket kit
The unit connects directly to your 12V auxiliary battery (powered by your DC-DC converter). No CAN bus, no dealer programming, no Ford-specific parts. Installation takes 4-6 hours for a competent mechanic and costs $350-$600 — less than half the price of a new factory rack.
Option 3: EHPS Conversion (Hydraulic with Electric Pump)
If you prefer hydraulic steering feel, CMVTE also offers an EHPS (Electric Hydraulic Power Steering) system. This uses a 12V electric pump to pressurize a hydraulic rack. It's more complex than EPS but gives a traditional steering feel preferred by some builders.
Repair Cost Comparison
| Solution | Parts Cost | CAN Bus Required? | DIY Friendly? |
|---|---|---|---|
| Ford dealer rack replacement | $1,100-$1,800 | Yes | ❌ Dealer-only programming |
| Refurbished rack | $600-$900 | Yes | ⚠️ Needs programming tool |
| CMVTE EPS Kit (Recommended) | $350-$600 | No — standalone | ✅ Full DIY install |
| CMVTE EHPS Kit | $500-$800 | No | ⚠️ Moderate — hydraulic lines |
Why CMVTE EPS Works Better for an EV-Converted Explorer
- No CAN bus dependency — works with any motor controller, BMS, or battery system
- Plug-and-play wiring — connect to your 12V DC-DC output and you're done
- Adjustable assist level — torque sensor-based system adjusts help based on steering input
- Compact size — the controller unit fits in the engine bay alongside your motor and inverter
- Global shipping — available in 130+ countries with full customs documentation
Don't Let a Failed EPS Stop Your Explorer Conversion
Tell us your Explorer model year and whether you want EPS or EHPS. We'll send you the correct kit with mounting instructions and wiring diagram within 24 hours.
WhatsApp / Phone: +86 181 2358 8272
Email: [email protected]
Mention "Explorer EPS" so our team fast-tracks your quote.
