Comms failure EMS - LotusTalk - The Lotus Cars Community
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post #1 of 18 (permalink) Old 03-15-2017, 06:34 PM Thread Starter
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Unhappy Comms failure EMS

Hi there,

Just received my 2011 Evora IPS auto with a flat battery, guys at the port tried jump starting it with the key in the 'on' position, my auto electrician said chances are that has probably fired the ECU- anyone had this problem before or seen that 'Comms failure EMS' warning light before? Please help! Quite annoyed to say the least if I have to replace the ECU because of this.
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post #2 of 18 (permalink) Old 03-16-2017, 10:54 PM
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What does that light look like? A wrench? Or is it a message displayed one of the information panels?

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post #3 of 18 (permalink) Old 03-17-2017, 05:54 AM
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@Liamlotus
ECM is more than likely fried.

It most commonly happens when the key is in the ignition while trying to jump an Evora. We have seen a few cars come in with this issue.

We always keep the key away from the vehicle until we have the jump box connected. Then we proceed to grab the key and start the vehicle. The ECM is extremely sensitive to voltage spikes and is powered up when the key is in the ignition in ANY position.

IF this is the issue, you will need a new ECM, label, and the ECU has to be reprogrammed by a Lotus dealer. Variant codes, TCU pairing, Green learns procedure, everything. It is usually between 4-5 hours of labor for removal, reinstall, reprogram, ect.

Retail price on the ECM is $1614.05, and the label is like $6.

@agentdr8 - It is a message on the right side in the coolant temp widow on the cluster. "COMMS ERR"

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post #4 of 18 (permalink) Old 03-17-2017, 08:55 AM
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Ouch. Hopefully you can get those guys at the port (or their company) to foot the bill @Liamlotus

Thanks for the info Gator. It'll definitely come in handy if I'm ever in that situation.
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post #5 of 18 (permalink) Old 03-17-2017, 11:44 AM
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There is new hope. We recently received information that the ECU can be saved when this COMMS ERR occurs. It is a time consuming process, but it can be done at a Lotus dealer that has all the proper information and contacts and software (which should be any certified Lotus dealer). In most cases it will only be a labor charge, no parts needed.

Best of luck,

T.J.

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Specializing in Lotus service, parts, and performance upgrades.
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post #6 of 18 (permalink) Old 03-21-2017, 01:38 PM Thread Starter
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Thanks Gator and agentdr8, hopefully it will work out. I have attached the error message.
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post #7 of 18 (permalink) Old 03-22-2017, 07:22 AM
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That is the message. I would tow it to your dealer and have them go through the procedure I outlined in my earlier comments. Best of luck. If I can be of any assistance, please don't hesitate to shoot me an email and I will be happy to help in any way I can. [email protected].

T.J.

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Authorized Lotus, Rossion, Magnum, and Zenos dealership.
Specializing in Lotus service, parts, and performance upgrades.
"Unrivaled Excellence"
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post #8 of 18 (permalink) Old 08-17-2017, 07:06 AM
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did you ever get this resolved?? Mine has been at the dealer for almost half a month now with similar issue and little progress made..
just looking for answers at this point..
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post #9 of 18 (permalink) Old 09-06-2017, 11:22 AM
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You're both screwed. You need an ECU. Same thing happened to me, and I tried literally EVERY avenue to save it. The worst part about my case is that while I was having exhaust designed for my car the fabricator left the trunk open, killed the battery, and fried the ECU while trying to jump start, then refused to take responsibility. My local Lotus dealer Ferrari Bentley Lotus of Denver took care of me, I was able to source a new ECU from an online dealer for around $950 shipped, and they slashed the installation cost to $100 flat rate. I then told the fabricator to pound sand when he handed me a $1000 bill for his work, so I came close to breaking even.
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post #10 of 18 (permalink) Old 09-06-2017, 12:07 PM
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Quote:
Originally Posted by jlobo941 View Post
You're both screwed. You need an ECU. Same thing happened to me, and I tried literally EVERY avenue to save it. The worst part about my case is that while I was having exhaust designed for my car the fabricator left the trunk open, killed the battery, and fried the ECU while trying to jump start, then refused to take responsibility. My local Lotus dealer Ferrari Bentley Lotus of Denver took care of me, I was able to source a new ECU from an online dealer for around $950 shipped, and they slashed the installation cost to $100 flat rate. I then told the fabricator to pound sand when he handed me a $1000 bill for his work, so I came close to breaking even.
Yep ECM fried at the hands of the dealership employee, but I still had to assume responsibility.. despite trying the software patch, nothing could be done to save it.

My whole ordeal cost me almost $3500 and 29 days without the car. The car is still under warranty and I was not behind the wheel when the error came up, but Lotus still claims I was still responsible for the whole thing.

New battery, new ECM from Lotus, 2 tows and 1k in labor.

Disputing the responsibility and charges with Lotus but I highly doubt I'll ever even get a response back from them.
As much as I love my car, the whole experience has left me somewhat disappointed in the brand as a whole.
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post #11 of 18 (permalink) Old 09-07-2017, 07:13 AM
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Yep ECM fried at the hands of the dealership employee, but I still had to assume responsibility.. despite trying the software patch, nothing could be done to save it.

My whole ordeal cost me almost $3500 and 29 days without the car. The car is still under warranty and I was not behind the wheel when the error came up, but Lotus still claims I was still responsible for the whole thing.

New battery, new ECM from Lotus, 2 tows and 1k in labor.

Disputing the responsibility and charges with Lotus but I highly doubt I'll ever even get a response back from them.
As much as I love my car, the whole experience has left me somewhat disappointed in the brand as a whole.
Let me guess, Park Place? Their Lotus tech is as crooked as they come.
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post #12 of 18 (permalink) Old 09-07-2017, 07:18 AM
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Originally Posted by texevora View Post
Let me guess, Park Place? Their Lotus tech is as crooked as they come.
lol yep, indeed they are.

Only reason I took it there is because I was under the impression it was a warranty issue. Otherwise they will never see my face, my car... or my money again.

I thought they should have at least comped me the labor charges because of how mishandled the situation was, but nope, their bottom line is most important to them over customer service/ satisfaction.
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post #13 of 18 (permalink) Old 09-07-2017, 06:45 PM
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It might not be something you want to do, but I'd probably consider doing a chargeback if it were me.

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post #14 of 18 (permalink) Old 09-07-2017, 07:40 PM
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Anyone wants to send me a "fried ECU", I'd love to see if it's really fried...

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post #15 of 18 (permalink) Old 09-08-2017, 03:43 AM
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@turbophil - The ECU vulnerability described here seems like a real gotcha and one that would put the ECU at risk any time the vehicle was out for service. Does your firm have enough experience with the Evora to develop power conditioning that would prevent ECU damage from transient voltage spikes? It seems like it would be as simple as a capacitor or a zener diode in the right place. If I had an Evora, I'd sure as heck being doing something . . .

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post #16 of 18 (permalink) Old 09-08-2017, 03:57 AM
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It might not be something you want to do, but I'd probably consider doing a chargeback if it were me.
Whats a chargeback?

I gave my old EMC back to Lotus for diagnostics hoping they'd see i was not at fault, but again, doubtful ill hear back
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post #17 of 18 (permalink) Old 09-08-2017, 06:23 AM
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Whats a chargeback?

I gave my old EMC back to Lotus for diagnostics hoping they'd see i was not at fault, but again, doubtful ill hear back
It's where your credit card company revokes the funds on your behalf, essentially: https://www.dalpay.com/en/support/chargebacks.html and https://www.nerdwallet.com/blog/cred...d-chargebacks/

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post #18 of 18 (permalink) Old 04-20-2019, 07:37 PM
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Are there any updates on this thread?

I swapped my battery out to come back to a "Comms Failure EMS". I didn't jump anything, so I'm utterly confused. I did try and start when the trickle charger was connected though.

I'm going to setup a dealer appointment. Has anybody confirmed if the labor (software) only solution works and what it cost them?
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