INTRODUCTION – WHY BUY FROM AUTOMAN SPARE PARTS?

Welcome to AutoMan Spare Parts – www.automanspareparts.com, the leading global supplier of OEM ECUs, ECMs, and Control Modules, trusted by buyers across the USA, Mexico, Australia, UAE, and Asia.

We are proud to be:

• No.1 OEM ECM/ECU supplier in the Philippines

• Offering the largest inventory of used & tested original ECUs

• With the cheapest rates worldwide

• And fast global shipping to over 160+ countries

If you need a reliable replacement for the Honda CR-V RE 2.4 Petrol Automatic ECU (37820-RZA-Q71 / 3670-101898), this guide explains everything before buying.

**COMPLETE GUIDE HONDA CR-V RE 2.4 PETROL AUTOMATIC ECU

(37820-RZA-Q71 / 3670-101898) – 2007 to 2012**

The Engine Control Unit (ECU) in the Honda CR-V RE regulates ignition timing, fuel delivery, throttle position, sensors, and automatic transmission coordination for the 2.4-liter petrol engine.
Any failure can cause drivetrain hesitation, gear shift delays, and severe performance loss.

1. What This ECU Does in the Honda CR-V RE 2.4

• Controls fuel mapping

• Regulates ignition timing

• Manages VTEC operation

• Communicates with the automatic transmission

• Works with sensors (O2, MAF, throttle body, camshaft, crankshaft)

• Ensures emissions compliance

• Controls engine idle and cold start functions

2. Common Symptoms of a Faulty ECU (37820-RZA-Q71)

If your CR-V shows the following, the ECU may be failing:

• Hard starting or no-start

• Rough engine idle

• Misfires despite good ignition components

• Poor fuel economy

• Sudden gear jerks in automatic transmission

• Check Engine Light with multiple random codes

• Loss of power at acceleration

• ECU overheating or burning smell

• Communication failure during OBD scanning

3. PART NUMBERS COVERED IN THIS GUIDE

The following part numbers refer to the same or interchangeable ECU family:

• 37820-RZA-Q71

• 3670-101898

• Additional close variants may include RZA-Q7A, RZA-Q72, etc.

Always verify with your VIN for 100% accuracy.

COMPATIBILITY TABLE

Honda CR-V RE 2.4 Petrol Automatic ECU Compatibility (2007–2012)

4. Do You Need Programming When Replacing This ECU?

Yes — in most cases, programming or immobilizer matching is required.

Programming Steps Required:

• Immobilizer Reflash / Key Coding

• VIN Writing

• Sync with automatic transmission

• Clearing old stored data

Who Can Program It?

• Professional auto electricians

• Honda dealership

• ECU reprogramming specialists

5. Why Choose an OEM Used ECU Over a New One?

OEM used ECUs offer:

• Lower price with identical performance

• Same durability as original Honda part

• Perfect compatibility

• No aftermarket issues or calibration errors

AutoMan Spare Parts tests all modules before dispatch.

6. Installation Tips

• Disconnect battery before installation

• Check all ground points

• Inspect wiring for corrosion

• After installation, perform throttle body reset

• Ensure immobilizer sync completes successfully

TLDR (SUMMARY)

• ECU 37820-RZA-Q71 / 3670-101898 fits Honda CR-V RE 2.4 Automatic 2007–2012.

• Symptoms of failure include rough idle, misfires, and gear shifting issues.

• Replacement requires programming or immobilizer matching.

• Buying a used OEM ECU is cost-effective and reliable.

• AutoMan Spare Parts provides tested, original, cheapest, fast-shipping OEM ECUs globally.

FAQ SECTION

1. Is the Honda CR-V RE ECU plug-and-play?

Not fully. Immobilizer programming is usually needed.

2. Can I install a different ECU part number?

Only compatible RZA-Q7 series variants are recommended. Always match software ID or consult us.

3. How long does an OEM ECU last?

15–20 years when maintained properly.

4. Do you ship worldwide?

Yes, AutoMan Spare Parts ships globally with fast delivery to the USA, Mexico, UAE, UK, Australia, and more.

5. Is a used OEM ECU safe?

Yes. OEM units are more stable than aftermarket parts and work perfectly when tested.