1985 Toyota 4x4- while at a stop, with brake pedal depressed- brake pedal slowly sinks 2 inches to floor.
You either got a break fluid leak somewear or the master cyl. is bad.
Defective brake master cylinder. Replace. Or, a leak in the system Look behind each wheel foor traces of leak.
Sounds like your master cylinder is shot. Go to a parking lot, stop, and pump the pedal a bunch of times. Then get out and see if there is any fluid leaks by any of the wheels. That would indicate a brake line leak. My first guess, however, is your master cylinder.
No need to panic rush through this procedure, just do it right. Haste makes waste.
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert an original Master Key into the ignition but do not turn it.
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert New Key into ignition but do not turn it.
6. Within 10 seconds depress and release the accelerator pedal 1 time.
7. Now sit and wait for about one minute until the security light in the center counsel stops blinking and turns off.
8. Remove new key and depress and release brake pedal 1 time.
9. Test your key now. It should work if you followed the instructions. If not, you may want to try the following instructions:
This procedure is for 2002 Camry and most other models in this year of Toyota. In the future always give the model as well as year and make. Thanks
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rav4 2007 sinking brake pedal solutions
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