Another GT-R Battery (issue) thread
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
Another GT-R Battery (issue) thread
I have a ‘17 GT-R and have recently had 2
occasions where the car has basically juddered to a complete stop throwing up both the ‘Stop’ Battery symbol and also my OBD reader said all 8 ignition coil’s had failed.
Im fairly certain this is an electronic/battery issue….what are the downsides to changing the battery to a lead acid battery (other than weight) rather than trying to get hold of a new lithium battery (which are on back order)?? I realise the SAM will need to be ‘told’ the lithium battery has been removed but again other than weight will it cause any other issues??
I’ve been charging/trickle with the CTEK lithium charger as I don’t have the MB charger balancer, is it worth trying to get hold of one and bring the battery back to life or with the age of the car coming up to 7 years is it time to swap it out??
Thanks.
occasions where the car has basically juddered to a complete stop throwing up both the ‘Stop’ Battery symbol and also my OBD reader said all 8 ignition coil’s had failed.
Im fairly certain this is an electronic/battery issue….what are the downsides to changing the battery to a lead acid battery (other than weight) rather than trying to get hold of a new lithium battery (which are on back order)?? I realise the SAM will need to be ‘told’ the lithium battery has been removed but again other than weight will it cause any other issues??
I’ve been charging/trickle with the CTEK lithium charger as I don’t have the MB charger balancer, is it worth trying to get hold of one and bring the battery back to life or with the age of the car coming up to 7 years is it time to swap it out??
Thanks.
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
Turned everything off, turned everything back on again and drove home normally on both occasions 🤷🏼♂️ albeit with the amber engine light on. Got home plugged in my OBD reader cleared the fault to see if it happened again - which it did eventually. Car is now with tech’s trying to get to the bottom of the problem.
Newbie
Joined: Jun 2021
Posts: 5
Likes: 6
AMG GTR
Hey Simon,
I have had exactly this issue! It ended up being an earth strap that had been knocked off underneath the car. Once it had been put back (might have knocked it off on a speed bump) it went largely back to normal. Hope that helps!
I have had exactly this issue! It ended up being an earth strap that had been knocked off underneath the car. Once it had been put back (might have knocked it off on a speed bump) it went largely back to normal. Hope that helps!
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
I’ll pass that on to my tech, thanks very much for that, with all of the battery issues on the forum it’s good to finally find someone that resolved the problem!
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
Trending Topics
Newbie
Joined: Jun 2021
Posts: 5
Likes: 6
AMG GTR
Not sure on exact location, but here's what I was told:
"The Earth from the Engine to the Subframe and then Subframe to the Body were both slightly corroded, so these were cleaned up and refitted which resolved the issue."
"The Earth from the Engine to the Subframe and then Subframe to the Body were both slightly corroded, so these were cleaned up and refitted which resolved the issue."
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
Great info, thank you - I’ll pass it on to my tech
MBWorld Fanatic!
Joined: Feb 2009
Posts: 1,151
Likes: 129
From: DMV
AMG GTBS, AMG GTR Pro, AMG GT, C63 AMG, Porsche Panamera 4S, RX-7 FC Turbo II
I have a ‘17 GT-R and have recently had 2
occasions where the car has basically juddered to a complete stop throwing up both the ‘Stop’ Battery symbol and also my OBD reader said all 8 ignition coil’s had failed.
Im fairly certain this is an electronic/battery issue….what are the downsides to changing the battery to a lead acid battery (other than weight) rather than trying to get hold of a new lithium battery (which are on back order)?? I realise the SAM will need to be ‘told’ the lithium battery has been removed but again other than weight will it cause any other issues??
Thanks.
occasions where the car has basically juddered to a complete stop throwing up both the ‘Stop’ Battery symbol and also my OBD reader said all 8 ignition coil’s had failed.
Im fairly certain this is an electronic/battery issue….what are the downsides to changing the battery to a lead acid battery (other than weight) rather than trying to get hold of a new lithium battery (which are on back order)?? I realise the SAM will need to be ‘told’ the lithium battery has been removed but again other than weight will it cause any other issues??
Thanks.
I’m replacing my lithium battery on the Pro with a new one. They are scarce, but my SA sourced one in Texas last week which arrived in Maryland today.
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
I’m fairly certain this is the original battery so it is approaching 7 years old now.
MBWorld Fanatic!
Joined: Feb 2009
Posts: 1,151
Likes: 129
From: DMV
AMG GTBS, AMG GTR Pro, AMG GT, C63 AMG, Porsche Panamera 4S, RX-7 FC Turbo II
Super Member
Joined: Jul 2014
Posts: 807
Likes: 280
.
Interesting, since Pro model is 2020, and these batteries should last longer than 4-5 years.
How many miles on your Pro? Was your Lithium battery developing faults?
Ever do trickle charger maintenance on it, and if so, how often did it receive trickle charge?
These OEM Lithium batteries seem to do much better with regular trickle charges. . .
How many miles on your Pro? Was your Lithium battery developing faults?
Ever do trickle charger maintenance on it, and if so, how often did it receive trickle charge?
These OEM Lithium batteries seem to do much better with regular trickle charges. . .
MBWorld Fanatic!
Joined: Feb 2009
Posts: 1,151
Likes: 129
From: DMV
AMG GTBS, AMG GTR Pro, AMG GT, C63 AMG, Porsche Panamera 4S, RX-7 FC Turbo II
Interesting, since Pro model is 2020, and these batteries should last longer than 4-5 years.
How many miles on your Pro? Was your Lithium battery developing faults?
Ever do trickle charger maintenance on it, and if so, how often did it receive trickle charge?
These OEM Lithium batteries seem to do much better with regular trickle charges. . .
How many miles on your Pro? Was your Lithium battery developing faults?
Ever do trickle charger maintenance on it, and if so, how often did it receive trickle charge?
These OEM Lithium batteries seem to do much better with regular trickle charges. . .
MBWorld Fanatic!
Joined: Dec 2013
Posts: 1,084
Likes: 508
*
As a family, we drove 1982/1983 MBZ 300 TurboDiesel cars (at one point we had 3) for over a million km (one I drove for 27 years). Now there's a case where the batteries almost always had a sudden catastrophic failure. Due to the high starting current (glo-plugs + high compression), every battery I ever replaced (8 IIRC), except one, failed by "internal fusing" (creating an open internal connection) when being started. Fortunately, the majority of the time it was at home.
Last edited by user33; Apr 1, 2024 at 01:58 PM.
Thread Starter
Newbie
Joined: Mar 2024
Posts: 10
Likes: 4
AMG GTR
Just to finish up this thread. Having been backwards and forwards with electrical issues, it turned out that a rodent of some description had taken a liking to the main feed wire to the ignition coils AND the alternator cable, both had been well and truly chewed, droppings were found in there too! All sorted now, new cables and it’s back to running normally again - thankfully I didn’t have to shell out for a new battery, as it wouldn’t have solved any problems!
Newbie
Joined: May 2024
Posts: 1
Likes: 0
AMG GTR
Spoke too soon. Car threw up ‘Stop’ battery light again and spluttered to a stop, couldn’t start it again either (which in the past I’ve been able to do). Car is back with MB, apparently showing a fault with the alternator. They’ve understood though that I’ve driven it 500+ miles since the wires have been replaced without a hiccup at all and it’s a noted problem with this car. They’ve cleaned up the earthing cable and updated the front fans 
as apparently that is the fix MB have recommended. Told them to road test over a few days. The reliability with this car has been horrendous!
as apparently that is the fix MB have recommended. Told them to road test over a few days. The reliability with this car has been horrendous!
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,152
Likes: 1,766
From: Colorado
G550
Just to finish up this thread. Having been backwards and forwards with electrical issues, it turned out that a rodent of some description had taken a liking to the main feed wire to the ignition coils AND the alternator cable, both had been well and truly chewed, droppings were found in there too! All sorted now, new cables and it’s back to running normally again - thankfully I didn’t have to shell out for a new battery, as it wouldn’t have solved any problems!
Super Member
Joined: Jul 2014
Posts: 807
Likes: 280
.
One cannot make an honest claim regarding vehicle reliability when such a wild card as a Rodent was involved, with untold damage to who knows how many other connectors/wires.
That said, hopefully your shop can check each connector and wiring with a fine tooth comb.
In addition, these Lithium batteries seem to do much better with a weekly trickle charge via OEM provided charger, even if driven routinely.
Best of luck, hope you get it sorted.
That said, hopefully your shop can check each connector and wiring with a fine tooth comb.
In addition, these Lithium batteries seem to do much better with a weekly trickle charge via OEM provided charger, even if driven routinely.
Best of luck, hope you get it sorted.
Member
Joined: Sep 2012
Posts: 233
Likes: 23
From: Texas Hill Country
2020 AMG GTR
