Cadillac ELR ECM-Power Relay Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(2,875)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(2,875)

ECM-Power Relay Replacement Service

How much does a ECM-Power Relay Replacement cost?

On average, the cost for a Cadillac ELR ECM-Power Relay Replacement is $123 with $28 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 Cadillac ELRL4-1.4L HybridService typeECM-Power Relay ReplacementEstimate$170.15Shop/Dealer Price$201.44 - $255.94
2016 Cadillac ELRL4-1.4L HybridService typeECM-Power Relay ReplacementEstimate$150.15Shop/Dealer Price$181.47 - $235.99
2014 Cadillac ELRL4-1.4L HybridService typeECM-Power Relay ReplacementEstimate$150.15Shop/Dealer Price$181.47 - $235.99
Show example Cadillac ELR ECM-Power Relay Replacement prices

What is the ECM-Power Relay all about?

Vehicle development has evolved over the past several decades to a point where it seems every vehicle function is controlled by a computer, right down to the engine itself. This is actually the case for the engine and its related functions as it is controlled by the engine control module, or ECM. The ECM monitors and adjusts operation and power distribution to the fuel supply and injection systems, engine timing, exhaust gas recirculation, emissions, ignition system, and several other systems. In order to dispense power to operate these other systems, the engine control module requires power itself.

The power distribution center, or fuse block, located under the hood houses most or all of the vehicle’s fuses and relays. It contains a relay for the ECM that is powered up when the ignition key is turned to the on position. This ECM power relay acts as a switch that supplies power to the ECM. When the ignition is turned off, power switches inside the ECM relay and it no longer receives battery power. If the ECM power relay stops switching as it should, you will experience vehicle problems. When the relay is stuck open, no power will be delivered to the engine control module and the vehicle won’t start. If the relay is stuck closed, constant power will be sent to the ECM even with the engine turned off and the battery will drain.

Keep in mind:

  • The battery should be disconnected any time the electrical system is being serviced.
  • There are several problems which can cause your vehicle not to start, with the ECM power relay being one of them. Have the problem diagnosed by one of our expert technicians.

How it's done:

  • The ECM-power relay is verified that it needs to be replaced. The relay is located in the engine main fuse relay control box.

  • The defective ECM-power relay is removed from the control box by pulling it straight up and out of socket.

  • The new ECM-power relay is installed into the socket and the engine scanned for codes.

  • The engine is started and the ECM-power relay is tested for proper operation.

  • The vehicle is road tested for proper operation of the ECM-power relay and is then checked for codes.

Our recommendation:

The ECM power relay should last the lifetime of your vehicle unless there is a power distribution problem or moisture that causes it to fail. If your vehicle won’t start, have one of our expert technicians diagnose the problem and replace the ECM power relay if necessary.

What common symptoms indicate you may need to replace the ECM-Power Relay?

  • Engine will not start when the key is turned.
  • Engine doesn’t turn over when ignition is on.
  • Check Engine light is on.
  • Battery drain which may leave it weak or dead.

How important is this service?

Although it is extremely unlikely the ECM relay will cause your vehicle to stall or create a safety concern, your vehicle may not start or the battery may die while the ignition is off. In either case, you will need to replace the ECM relay.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Cadillac mechanics

Real customer reviews from Cadillac owners like you.

Excellent Rating

(2,875)

Rating Summary
2,704
88
18
17
48
2,704
88
18
17
48

Torrieanto

12 years of experience
632 reviews
Torrieanto
12 years of experience
Cadillac SRX V6-3.0L - Headlight Bulb Replacement (Driver Side Low Beam, Passenger Side Low Beam) - Tampa, Florida
He is awesome he came on time and got the work done less than the 1 hour needed .

James

8 years of experience
128 reviews
James
8 years of experience
Cadillac CTS V6-3.6L - Oil Change - Atlanta, Georgia
Great service!

Matt

15 years of experience
130 reviews
Matt
15 years of experience
Cadillac DeVille V8-4.6L - Window Motor / Regulator Assembly Replacement (Passenger Side Rear) - Milton, Washington
Did a great job for us, very knowledgeable.Thank you very much.Will definitely use this service if we need to in the future

Richard

16 years of experience
77 reviews
Richard
16 years of experience
Cadillac STS V8-4.6L - Exhaust Manifold Gasket - San Diego, California
Richard was professional, on time, and really pushed for me to get my exhaust leak fixed much faster than excepted. My car sounds great again.

Excellent Rating

(2,875)

Rating Summary
2,704
88
18
17
48
2,704
88
18
17
48
Number of Cadillac services completed
31625+
services done by our mechanics
TOTAL NUMBER OF EXPERT Cadillac MECHANICS
900+
experts on our platform

Recent articles & questions

4 Essential Things to Know About Cleaning the Interior of Your Car
Cleaning Cleaning the interior of your car is something that should be done regularly. It will keep the seats, carpeting, and overall condition of your vehicle looking better for longer. If you decide to resell it in the future, your...
Kia Certified Pre-Owned (CPO) Car Program
If If you have been shopping for a used Kia vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on...
How to Replace a Car Door Panel
You You may have that annoying rattle coming from your door as you drive, your window may no longer work,our door locks or handles may not function properly, or you may even have a problem with the switches on the...

Brake light issue

The rear brake light on the right uses the same power as the one on the left. If you are getting brake lights on the left side but not on the right, then you will need to test the right...

Very loud pop when turning sharp left leaking transmission or power steering fluid where steering column meet rack

Hi there. If everything else has already been installed from the donor vehicle then it sounds like the high pressure hose is all that you need to install. The hardest part of doing this is the routing. One thing you...

Car shaking

Vibration at idle is due to either failed motor/transmission mounts or an engine operating condition that causes a rough idle. If you are getting vibration through the steering wheel at speed, the most common cause is a wheel/tire imbalance although...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com