My 1999 ML430 will flash the caution triangle on the cluster wile driving,
then the ABS system will apply brakes by themselves. Any one see/hear of anything like this?
Thanks. Jay

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83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "

The triangle is flashing because traction system thinks a wheel is slipping, make sure all the tires are same diameter, have the system tested with shop sds, could be bad yaw rate sensor

Some cars have what is called BAS ( Brake Assist ) . This looks at the rate of brake peddle application and decides if the driver is intending to make a rapid stop but isn't pushing hard enough.

There might be a problem with this system.

Do you have any fault codes?

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

I have not had the codes read on her yet. Cant get her into MB dealer till later this week. I have a parts ML and I plan on swapping out the yaw sensor tonight.

__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "

I swapped out Yaw sensor last night. Do I need the program it or is it plug and play? Seams to be doing the same thing.
Thanks. Jay

__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "

Also could be bad steering angle sensor

Where is steering angle sensor?
and do i have to get yaw sensor programed?
Local dealer cant get me in till not this friday but next : (

__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "

DO you have a check engine light? You can get the basic OBD codes read at Autozone. The steering angle sensor is in the steering column. I wouldn't consider it until you had codes checked.

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Prost!

This is one of the codes that popped up. P0720 Output Speed Sensor Circuit Malfunction

__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "

OK, now we have a clue. For MB, this code relates to communication with the rear wheel speed sensor. It could be the sensor, or wiring to it - see also this post: Could P0720 be related to failure of ESP - Page 4 - Mercedes-Benz Forum

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Prost!

Where is the speed sensor ?
Also I cant understand why the brake light will come on and beep and she will go into limp mode when I just start her up and turn steering wheel all the way one way then all the way to another. If it was a speed sensor you would think it would have to be moving the make that happen.
Thanks. Jay

__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "

Sensor is located at carriers in rear, screw holds sensor down,in front sensors are in front carriers.