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Hi, I need some help from the experts in this forum.
My car just stopped starting out of no where. Here are the symptoms.
1) FOB blinks when I press the START button OR put the KEY in the slot ( blinks 3 - 4 times, looks like a sequence )
2) Accessories DO NOT come on
Other details:
3) FOB can lock / unlock the car
4) Looks like FOB is not an issue ( same issue even after replacing the FOB battery )
5) Tried the 2nd FOB ( same issue )
6) Main battery is only 6 months old, measured the voltage, it looks Okay 12.5V
7) No cranking sound is heard, looks like it does not even attempt to start the car
8) Can not roll windows etc..
9) Lights etc.. inside (and may be outside ) do come ON.
Hi, I need some help from the experts in this forum.
My car just stopped starting out of no where. Here are the symptoms.
1) FOB blinks when I press the START button OR put the KEY in the slot ( blinks 3 - 4 times, looks like a sequence )
2) Accessories DO NOT come on
Other details:
3) FOB can lock / unlock the car
4) Looks like FOB is not an issue ( same issue even after replacing the FOB battery )
5) Tried the 2nd FOB ( same issue )
6) Main battery is only 6 months old, measured the voltage, it looks Okay 12.5V
7) No cranking sound is heard, looks like it does not even attempt to start the car
8) Can not roll windows etc..
9) Lights etc.. inside (and may be outside ) do come ON.
Any help is appreciated.
-Maan
You confirm keyfob works well but even inserted in keyslot: no crank! Use keyslot going forward so we are not wasting any time with unstable keylessGo.
-1- PRIME SUSPECT: Low voltage /drained batteries...
Does the whole dashboard illuminates NORMALLY the "X-Mas tree lights"... or nothing?
You say MAIN battery is less than 1Yr old
- What about its charge level under load:10v?
- Try a nornal overnight charge for sanity check.
No lucky part list to solve this but troubleshooting tests ...
-2- LOGICAL CONDITIONS FAULTS....
Connect your trusted go-to MB Scanner to read chassis faults from distress modules. Any hints from status report?
> How is AUX batt doing?
> Any soaked module such as ISM will fail security.
> It could be as imple as the brake pedal switch (not super common).
> Of course you can test voltage activity with test light at starter solenoid but don't waste too much time suspecting this starter.
Report further inputs.
Last edited by CaliBenzDriver; Dec 13, 2025 at 02:44 PM.
Thanks. That was my guess too based on symptoms and reading thru other threads in this forum.
Code has confirmed it.
The repair is pretty steep. Unfortunately mine got stuck in the steering lock position so it's much harder (and time consuming) to take it out.
~$1500 for a bypass solution in San Jose bay area.
Thanks. That was my guess too based on symptoms and reading thru other threads in this forum.
Code has confirmed it.
The repair is pretty steep. Unfortunately mine got stuck in the steering lock position so it's much harder (and time consuming) to take it out.
~$1500 for a bypass solution in San Jose bay area.
Regards
Speaking of SJ and South Bay Area...
have you searched the eBay dot com for ESL emulators replacement services ?
Since I could not remove the old one I did not explore ebay or other DIY options.
Based on the youtube videos it had to be drilled out. Basic tricks like tapping with a hammer etc.. did not work.
This sounds silly. But I had an issue where my key would start the car no problem but would have an issue where they key would not lock or unlock the car.
What ended up solving this issue is disconnecting the battery for 20 minutes for all the control units to reboot, problem went away.
This sounds silly. But I had an issue where my key would start the car no problem but would have an issue where they key would not lock or unlock the car.
What ended up solving this issue is disconnecting the battery for 20 minutes for all the control units to reboot, problem went away.
The advanced tip of Rebooting is always a possibility to temporarily sanitize these chassis. They work amazingly better after reboot + float...
Parts of the same network can end up not communicating well in particular the CAN-B.
Reboots help for a few days.
Refer to your scanner report for clear issues.
Last edited by CaliBenzDriver; Dec 17, 2025 at 05:33 PM.
Thank you all for the help.
I ended up having someone come to my driveway to drill the steering lock out and install a bypass module.
No more startup issues.
I still have the "Central gateway is faulty" code. Will try hard reboot for that and see if it goes away.
Now I am left with two error codes. It's not clear if they both are connected to each other or not.
I am hoping that they will disappear once i disconnect the battery and do a cold reboot.
Does any know the location of the "Temp sensor 2" it is referring to ?
Now I am left with two error codes. It's not clear if they both are connected to each other or not.
I am hoping that they will disappear once i disconnect the battery and do a cold reboot.
Does any know the location of the "Temp sensor 2" it is referring to ?
thanks
Temp sensor fault is lilely a pulled tinny wire at passenger footwell cover... a classic!
The way you're showing fault report does not show what module is reporting these faults. Let's not guess, look at the scanner itself.
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