|
|
|
#1
|
|||
|
|||
'84 W123 Seatbelt Warning Buzzer/Light
Hello Gentlemen,
Is there a way to deactivate/re-activate the seatbelt warning light and buzzer in a 1984 w123? I'm not talking about disconnecting or unplugging the harness but I'm asking if there are ways or series of sequences/procedures, like turning the ignition key to ON position, buckle and unbuckle 3 times as soon as the warning light and buzzer shuts off etc. etc.......? The car that I have right now, for some reason is deactivated.... the warning light and buzzer comes on when the key is turned during start-up but it does not come on anymore when the car is moving and the seatbelt is NOT buckled/fasten..... I have a high-schooler who's going to drive the car and I want to activate the seatbelt warning feature/system. Thanks!
__________________
'85 300D Turbo - CA Version |
#2
|
||||
|
||||
None of my cars buzz if the seatbelt is NOT fastened. They'll buzz as you describe though.
With a bit of wiring work, I bet you could make it work as you describe.
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#3
|
|||
|
|||
Wire it up so the engine will not start unless the belt is connected. also maybe install some type of pressure switch in the passenger seat bottom, so if he has a passenger that belt has to also be fastened to start the engine.
On our John Deere Tractor, if the PTO is on, there is a switch in the seat. If the operator gets out of the seat, it turns off the PTO. this is a safety thing. Charlie
__________________
there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#4
|
||||
|
||||
It wasn't until the 2003 model year that cars started getting seatbelt chimes that kept chiming when the car is moving. There is no song and dance to change it... the buzzer module is fairly simple.
The one in your car sounds like its working properly. It will only buzz when the key is first turned, and then only if the seatbelt is unhooked. I suppose you could re-wire the system to buzz all the time the seatbelt is unhooked. -J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#5
|
|||
|
|||
Quote:
I'll post it as soon as I find it.
__________________
'85 300D Turbo - CA Version |
#6
|
|||
|
|||
Quote:
1985 Mercedes 300D 0-60 - YouTube What do you think?
__________________
'85 300D Turbo - CA Version |
#7
|
||||
|
||||
I think Tyler's was broken. They'll do that if there are grounding problems.
Check out the FSM's info on the warning system: http://eva2.homeip.net/w126-1/Program/Chassis/54-410.pdf -J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#8
|
|||
|
|||
Quote:
It appears that the warning buzzer and light is triggered by the speedometer. It looks like it came on @ around 3 - 5 mph..... or it's more like when he stepped on the brake pedal (but when he shifted the gear from P to D, his foot shoud have been on the brakes in the first place....) The FSM diagram that you've attached will be very helpful. Thanks J!
__________________
'85 300D Turbo - CA Version |
#9
|
||||
|
||||
Like I said, I've seen that happen in W123s with grounding problems.
You could probably use a relay and buzzer from radio shack to accomplish what you want. I guess I'm fairly industrious... I always wear my seatbelt; but if my car had a buzzer that buzzed every time the buckle wasn't fastened it would get disabled so fast... possibly even smashed with a hammer. In fact that was one of the first things I did to my father's 2004 Passat... turn off the constant seatbelt chimer. He and I both always wear our belt and we still found it very annoying! Same thing in my friends 2003 F350. IMHO if you want your kid to wear his seatbelt have him watch crash test videos Actually I have an important question for you: Is this the 85 listed in your signature or an 84 as your original post said? Some 85 W123s have RS pretensioned seatbelts, and the computer looks at the buckle to know if it can activate the system. If the buckle says RS on it do not modify any wiring! -J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#10
|
|||
|
|||
Quote:
To answer your question, it is a 1984, and a different car which my cousin purchased last December for his son. I'm gonna ask him if there is an RS in the buckle as my '85 does (there are similarities between '84 and '85). We just think that the buzzer is a more pro-active safety measure to ensure that the driver wears and fasten his seatbelt everytime the car moves....you know, teens....
__________________
'85 300D Turbo - CA Version |
#11
|
||||
|
||||
IIRC RS seatbelts in W123s were for 1985.
-J |
#12
|
||||
|
||||
I thought the two wire connection under the seat (that are always disconnected) was for the seat belt alarm. HMmm
__________________
1981 300TD "The Green Lantern" 1980 300TD 1983 300D Euro "China Cat" |
#13
|
|||
|
|||
Quote:
I think from the OP, it's connected and working correctly. I think the light will come on regardless of connection and the buzzer will buzz if the belt is not connected; but it will go out upon closing the buckle or time out of the circuit. If the buzzer is going off with the buckle closed PRIOR to start, that probably means there's wear in the buckle and it's not sensing the buckle. If you want a continous chime when the car is in RUN and the buckle isn't closed, you'd have to cobble together a circuit - the other posters are right, there's no OE continuous warning. You could do it though, basically with a changeover relay, a warning chime and some wires. If you wanted to get diabolical, you could wire it so the radio wouldn't run unless the belt was buckled, so he can't turn it up to drown out the chime. Both of these assume a functioning buckle switch, since you're basically hijacking its function. See the drawing for OE functioning. Upon turning the key from OFF to RUN or START, the timer gets +12. It routes it to the seatbelt light and the seat belt switch. If the belt is undone, the switch is closed, so the +12v goes to the buzzer. If the belt is buckled, the switch is open, no +12v to the buzzer. When the timer times out, no more +12v to the buzzer OR the light. (Unless there's some other condition with the key or lights that trigger the buzzer, but that shouldn't happen in RUN or START, so it's not too likely.) |
#14
|
||||
|
||||
"the buzzer will buzz if the belt is not connected; but it will go out upon closing the buckle or time out of the circuit."
Sounds like he needs to bypass the timer so it's on until he fastens the belt.
__________________
1981 300TD "The Green Lantern" 1980 300TD 1983 300D Euro "China Cat" |
#15
|
|||
|
|||
Quote:
Probably disconnect under the seat, then jumper from pin 8 to the blue wire, reconnect the blacks. That should bypass the timer for the seatbelt. The light bulb is still on the timer. You could tie that in, a bit more complex, but do-able. |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|