Weird issue with start. 2007 450
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F150,GL450, G63, Aprilia Tuono, Honda Cbx
Weird issue with start. 2007 450
It started last month. Suddenly the truck wont start or twisting the key will just make it click and nothing would happen. Sometimes it will just go in slow crank.
Battery fully charged so no issues there. Happens randomly. Tried both keys with similar results. My auto shop ran the tool and it showed a fault with intake sensor position. They found that one of the flap thing was broken. I got intake manifold replaced. 2 days later same thing. No error codes what so ever. It would start all day and suddenly it wont. They ran all kinds of tests and concluded to be fuel pump this time. Fuel pumps and filter were replaced. Ran fine for a week and since this morning same issue.
Interestingly, once it starts, you can go 1000 miles. 2700 in repairs has lead to nothing. Wondering if anyone has experienced this and what was done to fix it. It is 2007 450 and has 65000 miles (
I know)
Battery fully charged so no issues there. Happens randomly. Tried both keys with similar results. My auto shop ran the tool and it showed a fault with intake sensor position. They found that one of the flap thing was broken. I got intake manifold replaced. 2 days later same thing. No error codes what so ever. It would start all day and suddenly it wont. They ran all kinds of tests and concluded to be fuel pump this time. Fuel pumps and filter were replaced. Ran fine for a week and since this morning same issue.
Interestingly, once it starts, you can go 1000 miles. 2700 in repairs has lead to nothing. Wondering if anyone has experienced this and what was done to fix it. It is 2007 450 and has 65000 miles (
I know)
Last edited by GLDriver; Feb 28, 2017 at 07:12 PM.
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gl450 530i
They need to use star to diagnose this those two repairs had nothing to do with your situation obviously this is one of thise times it woerh taking it to a Mercedes-Benz indy knowledgeable tech or the dealer its self
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From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
as what gl450 said, those issues that the dealer fixed had nothing to do with your GL cranking over. Since it is not your battery, it can be your starter. I have also read that it can also be the positive lead to the starter which is more unlikely than the starter. But it is unusual for a truck with 65000 mile to have the starter go.
If it happens again, you can crawl under the passenger side with a hammer and hit the starter. The point of doing this is to knock the brushes in your starter clean.(well, not really clean but just enough to get it started. If this works, you will probably need to pull your starter and replace or rebuild it.
If it happens again, you can crawl under the passenger side with a hammer and hit the starter. The point of doing this is to knock the brushes in your starter clean.(well, not really clean but just enough to get it started. If this works, you will probably need to pull your starter and replace or rebuild it.
Last edited by angelglo; Mar 1, 2017 at 12:04 AM.
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paid 265 for disgnostics at MB dealer. car is sitting 3 days and they are not able to reproduce it. It is so frustrating. How hard is it to replace the starter ? Dealer indicated that it could be close to 1K if it is starter .. if it is not starter, I am really not sure where to go from here
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From: Allentown, PA
'08 GL 320 CDI
Agree with the above notions that the most likely culprit is dirty/loose/corroded connections. If you're around salt air, this lends even more credence to this culprit. Aside from the connections, corrosion can wick it's way underneath the sheathing and corrode the wire from the inside, where you can't readily see it.
The fact that the issue kinda comes and goes can certainly explain the problem... someone is working on the car (or the vibrations of driving) and moves things around which temporarily makes a better connection.
Just to rule it out, get your battery load tested, too.
The fact that the issue kinda comes and goes can certainly explain the problem... someone is working on the car (or the vibrations of driving) and moves things around which temporarily makes a better connection.
Just to rule it out, get your battery load tested, too.
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From: s.f. bay area
s500 GL450 GL63 Z71XL Yukon 67 396 SS velle 68 Vert Camaro 69 RSSS Vert Camaro 75 Blazer
Since, it was at the dealer, hopefully they checked the positive connections but this is not hard to do except on the battery side since it is under the front pass. seat. check the junction under the red cover. you will be able to tell if it is corroded or loose. on the starter side, you can crawl under the truck on the passenger side and give it wiggle. you will be able to tell if it is loose or not but I have never heard of this getting loose if it has never been touched outside of the assembly plant. there is no ground cable to the starter as it is grounded at the mounting bolts. There is a ground wire on the passenger side sub frame. if you look straight down while standing on the passenger side under the hood, you will be able to see it. give it a wiggle and you should also be able to tell if it is corroded or not. Here is a quick video on voltage drop. it will at least help you understand the starter circuit as it is not to complicated.
in regards to changing the starter and how difficult? it just depends on you patients.
https://mbworld.org/forums/gl-class-...e-starter.html
in regards to changing the starter and how difficult? it just depends on you patients.
https://mbworld.org/forums/gl-class-...e-starter.html
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F150,GL450, G63, Aprilia Tuono, Honda Cbx
Video
here is first try after dealer kept it for week
http://www.youtube.com/watch?v=K5FXxAfYXng
all during the day it randomly does it atleast 2 out of 10 times.
I will inspect everything as suggested after wether gets a little warmer
http://www.youtube.com/watch?v=K5FXxAfYXng
all during the day it randomly does it atleast 2 out of 10 times.
I will inspect everything as suggested after wether gets a little warmer
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Ok
checked all wiring and battery terminals. Hammer did not help either .
I am wondering if I should replace crank position sensor even though it is not showing a fault ?
. I am wondering if I should replace crank position sensor even though it is not showing a fault ?
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watched the video.
it is not your crank position sensor. leave it alone.
was your battery load tested? fully charged means nothing.
have you tried starting with the key in the ignition? (no keyless go start). your eis might starting to act up.
if battery is good and still does it with key in the ignition my guess is you have a bad ground that acts up when loaded up. use wis to identify all major ground points in the truck and check them out.
it is not your crank position sensor. leave it alone.
was your battery load tested? fully charged means nothing.
have you tried starting with the key in the ignition? (no keyless go start). your eis might starting to act up.
if battery is good and still does it with key in the ignition my guess is you have a bad ground that acts up when loaded up. use wis to identify all major ground points in the truck and check them out.
Last edited by alx; Mar 13, 2017 at 09:47 AM.
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thanks
Thanks for reply. I do not have a keyless. It does act up with any of the two keys. Battery tested at auto zone and the guy confirmed it is good. (I had installed it 18 months ago). What is WIS, and EIS. Please educate a noob so i could act like one with mechanic
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wis - workshop information system. a computer- based repair manual with procedures and diagrams. available to the dealer techs as well as a illegal clone for personal use.
eis - electronic ignition switch. part of the authorization system to start the vehicle. eis is the part where you put your key in.
eis - electronic ignition switch. part of the authorization system to start the vehicle. eis is the part where you put your key in.
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the repair shop narrowed down to the ECM. I am told that it needs to be repaired and reprogrammed for a cost of 1100 (will be shipped to 3rd party) or I can get a new from MB for 1475+200 for coding. Is that a fair price or does anyone know a place that is known to you folks and would be cheaper
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I had a 'long-crank' condition as well as an intermittent 'slow-crank' condition. Turned out to be the starter, seems to be a thing with these units. I would certainly start by looking there and with the connections as well,
Aiden
Aiden
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When it does not start, the ECM was not sending signal. If you tap it with something, it would work. As per them, there is something either broken/burnt or loose.
Is there any known shop that does this repair on ecms on a regular basis ?
Is there any known shop that does this repair on ecms on a regular basis ?
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1985 500sec, 1991 500sel, 02 clk430
i know many people might oppose this but check on ebay, you need to make sure that the seller reprogram the unit to your car, also another thing to check first is the wire connectors on the ecm, just to make sure they are all making good contact and no corrosion on them
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From: Calgary, Alberta
2015 C400
My GL450 would not restart when the vehicle was hot, I sent the ECM to Texas to have it fixed but they couldn't repair it so it was a total waste of time. I ended up buying a new one from the dealership in Canada and it was almost $5000 installed! Who would have expected the ECU/ECM to go on a 10 year old vehicle with 150,000kms.
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gl450 530i
My GL450 would not restart when the vehicle was hot, I sent the ECM to Texas to have it fixed but they couldn't repair it so it was a total waste of time. I ended up buying a new one from the dealership in Canada and it was almost $5000 installed! Who would have expected the ECU/ECM to go on a 10 year old vehicle with 150,000kms.
5k seems stupid high really high actually
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na
$1100? Holy smokes. We can help you get back on the road for a lot less money than that. http://carcomputerexchange.com/merce...d/cat_203.html We have helped over 70,000 motorists get back on the road over the years so you can trust us too.
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no luck
I got the computer repaired from some other place , installed as per their recommendations (diconnect battery etc..) car ran great for 10 straight days. Now suddenly, it went back to its original issue.
Today my wife took my son to basball game and the damn thing would not start . she tried for good 15-20 minutes. It would crank nice but no go
. Finally suddenly it came to life. check engine light was on and one of my friend who also owns a repair shop (not MB but other cars) ran the OBD tool. It now comes back with P0014, P0021, P0410 and P0455.
3 months , 3 differnet car places, 3K in expense with no hope in sight.
Today my wife took my son to basball game and the damn thing would not start . she tried for good 15-20 minutes. It would crank nice but no go
. Finally suddenly it came to life. check engine light was on and one of my friend who also owns a repair shop (not MB but other cars) ran the OBD tool. It now comes back with P0014, P0021, P0410 and P0455.3 months , 3 differnet car places, 3K in expense with no hope in sight.
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gl450 530i
I got the computer repaired from some other place , installed as per their recommendations (diconnect battery etc..) car ran great for 10 straight days. Now suddenly, it went back to its original issue.
Today my wife took my son to basball game and the damn thing would not start . she tried for good 15-20 minutes. It would crank nice but no go . Finally suddenly it came to life. check engine light was on and one of my friend who also owns a repair shop (not MB but other cars) ran the OBD tool. It now comes back with P0014, P0021, P0410 and P0455.
3 months , 3 differnet car places, 3K in expense with no hope in sight.
Today my wife took my son to basball game and the damn thing would not start . she tried for good 15-20 minutes. It would crank nice but no go
. Finally suddenly it came to life. check engine light was on and one of my friend who also owns a repair shop (not MB but other cars) ran the OBD tool. It now comes back with P0014, P0021, P0410 and P0455.3 months , 3 differnet car places, 3K in expense with no hope in sight.
im going to go with the relay controlling this system. ill have to see which relay it is but im going to go on a limb here and hope its something stupid simple like how it was for me.
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thanks
Where are these relays and is there a way to check them . I see a box under the hood towards passenger side with some colorful ones. Are there any other boxes like these ?
