where is the brake light switch located in a 2008 GL450? (x164)
Thread Starter
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Joined: Sep 2009
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s430
where is the brake light switch located in a 2008 GL450? (x164)
hi all,
new owner of 2008 GL450 here in california...
the brake light lamp light was on, so i looked in the bulb housing and the bulb was missing, so i replaced it, and the bulb just turn on as i screw in the bulb..(meaning its a short, or the car thinks the brake padel is being pressed)
also, i noticed the car starts even when i dont have my foot on the brake padel and i just turn the key.
so i am thinking, that it has to be the brake light switch, and i have done this diy job in other cars so no big deal.
i googled gl brake light switch replacement and for some reason i can't find any info on this.
so i take apart the driver side footwell area so i can try to find the switch. (cant find it.... )
can anyone tell me where is the brake light switch in a GL450??
new owner of 2008 GL450 here in california...
the brake light lamp light was on, so i looked in the bulb housing and the bulb was missing, so i replaced it, and the bulb just turn on as i screw in the bulb..(meaning its a short, or the car thinks the brake padel is being pressed)
also, i noticed the car starts even when i dont have my foot on the brake padel and i just turn the key.
so i am thinking, that it has to be the brake light switch, and i have done this diy job in other cars so no big deal.
i googled gl brake light switch replacement and for some reason i can't find any info on this.
so i take apart the driver side footwell area so i can try to find the switch. (cant find it.... )
can anyone tell me where is the brake light switch in a GL450??
Thread Starter
Newbie
Joined: Sep 2009
Posts: 2
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s430
so maybe i did not explain my situation well.... or no one knew the issue.....
anyhow, my independent mechanic found the issue. it was the rear SAM (signal acquisition module). it was all corroded, and when asked if it was water damage, he said no, it was moisture build up in the area.
he fully cleaned out the module, and plugged it back but it still does not work.
unfortunately, this SAM needs to be flashed by the dealer, which my mech tells me that its about a $700~$1000 job in my area, los angeles. and the oem SAM costs about $400.
i still have to see what the labor charge will be for them to get to the SAM..... ughhhhhhh
according to my mech, this new SAM will fix the lamp issues, and also the liftgate issue....
anyhow, my independent mechanic found the issue. it was the rear SAM (signal acquisition module). it was all corroded, and when asked if it was water damage, he said no, it was moisture build up in the area.
he fully cleaned out the module, and plugged it back but it still does not work.
unfortunately, this SAM needs to be flashed by the dealer, which my mech tells me that its about a $700~$1000 job in my area, los angeles. and the oem SAM costs about $400.
i still have to see what the labor charge will be for them to get to the SAM..... ughhhhhhh
according to my mech, this new SAM will fix the lamp issues, and also the liftgate issue....
MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,191
Likes: 242
From: Albuquerque
'10 CL550, '12 GL550
You do not have to have foot on brake pedal to start engine.
Difficult to visualize the difference between water damage and moisture build up. These vehicles are notorious for leaks around the taillight gasket ... so much so that the rear SAM location was changed in later models.
Difficult to visualize the difference between water damage and moisture build up. These vehicles are notorious for leaks around the taillight gasket ... so much so that the rear SAM location was changed in later models.
Member
Joined: Jul 2010
Posts: 131
Likes: 24
gl550
so maybe i did not explain my situation well.... or no one knew the issue.....
anyhow, my independent mechanic found the issue. it was the rear SAM (signal acquisition module). it was all corroded, and when asked if it was water damage, he said no, it was moisture build up in the area.
he fully cleaned out the module, and plugged it back but it still does not work.
unfortunately, this SAM needs to be flashed by the dealer, which my mech tells me that its about a $700~$1000 job in my area, los angeles. and the oem SAM costs about $400.
i still have to see what the labor charge will be for them to get to the SAM..... ughhhhhhh
according to my mech, this new SAM will fix the lamp issues, and also the liftgate issue....
anyhow, my independent mechanic found the issue. it was the rear SAM (signal acquisition module). it was all corroded, and when asked if it was water damage, he said no, it was moisture build up in the area.
he fully cleaned out the module, and plugged it back but it still does not work.
unfortunately, this SAM needs to be flashed by the dealer, which my mech tells me that its about a $700~$1000 job in my area, los angeles. and the oem SAM costs about $400.
i still have to see what the labor charge will be for them to get to the SAM..... ughhhhhhh
according to my mech, this new SAM will fix the lamp issues, and also the liftgate issue....
i removed the controlled board( one of the SAM) next to the battery out and cleaned All COMPONENTs AND PINs that corroded.
Put everything back and Lucky that all messages gone.
You might try to clean it again.
Hope will work for you too..
