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Toyota Highlander Maintenance and Repair

4694 messages,  Last post on Dec 01, 2009 at 7:16 AM

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#1439 of 4694 STEERING VIBRATION while braking at 70 mph by dmoyer Jul 01, 2004 (8:06 pm)
I just experienced this with my 40,000 mile 02 HL. Was on a long trip, cruising on the interstate at 70, had to slow down in a hurry and then the steering/front end vibration. Got my attention!. But later no problem. This same thing was reported by "veekay" Apr/03. Any input by others might help me understand what happened.   #584 of 1438 STEERING VIBRATION by veekay1 United States of America Apr 01, 2003 (5:07 pm) Mark Reply   Hi folks! This board has been very helpful. I am reporting a steering vibration when braking at 65-70mph. This happens intermittently. Front brake pads recently checked were reported "OK". Any other ideas? Anyone else has had the same problem? Thanks in advance!
#1440 of 4694 Steering vibration - 02 Highlander by cmuniz Jul 02, 2004 (3:33 am)
The same happened to me a couple of weeks ago. Doing about 70mph and had to brake hard for stopped traffic ahead. The steering wheel had pretty strong vibration, like warped rotors. I pumped the brakes and the vibration decreased significantly. I tried to duplicate the problem later on the highway and it didn't do it again. Not sure what caused it. If the rotors were warped it would vibrate every time you tried to brake hard, but that's not the case. Our Highlander has 36,000 miles on the odo.
#1441 of 4694 Re: Highlander Brakes [stantonb1 #1434] by bigspender1 Jul 02, 2004 (8:41 am)
Replying to: stantonb1 (Jul 01, 2004 2:12 pm) If you want to get toyota to replace your master cylinder, and you have kids that ride in your car, and toyota is aware of the problem" just write toyota a letter and tell them you will have no choice but to take legal action if you get into an accident. This way you have a paper trail, You will hear from them real soon. Remember folks" A letter is the only way to get them to move. Write the letter from a word processing program like MS office. Make it professional. Make sure you send the letter FedEx or Express mail. Then go to their Web site and type in your tracking # to see if it was delivered, then print the document for your records. Keep us posted. DO NOT USE GE SILICONE BRAKE FLUID. IF YOU DO, SAY GOOD BY TO YOUR WARRANTY. Replies to this message: stantonb1 (Jul 02, 2004 5:51 pm)
#1442 of 4694 Brake Vibration of cmuniz by bikeman3 Jul 02, 2004 (8:44 am)
Could it be The ABS system woking properly?
#1443 of 4694 Re: rear trim [thoon #1427] by rsalvis Jul 02, 2004 (12:29 pm)
Replying to: thoon (Jun 29, 2004 12:30 pm) Wow - I have the same problem, but I haven't gone back to have it corrected. Based on your experience, however, having it replaced may not solve the problem. If anyone has a permanent fix, let us know!
#1444 of 4694 Re: Do not use silicone brake fluid [sdanders #1435] by stantonb1 Jul 02, 2004 (5:36 pm)
Replying to: sdanders (Jul 01, 2004 5:26 pm) Thank you. I replace the brake fluid and transmission fluid once a year. The brake system was bleed when the fluid was replaced. My mechanic uses PYROIL DOT 4 by Valvoline. I contacted Toyota and asked whether replacing my master cylinder with a new Toyota master cylinder since Toyota insists mine is performing up to specifications and installing Silicone fluid would void my warranty and the service advisor said it would not. If this will not correct my problem with a soft mushy pedal I won't consider it and go to the expense.   Thanks again!
#1445 of 4694 Re: Highlander Brakes [bigspender1 #1441] by stantonb1 Jul 02, 2004 (5:51 pm)
Replying to: bigspender1 (Jul 02, 2004 8:41 am) Thank you for the advise. We are conferring with attorneys and seeing what course of action we should pursue. The service managers at both Toyota dealers (Champion and Faulkner) are aware that children ride in the car. We will also take your advise and write to Toyota.   We are not going to stand by and let Toyota get away with not correcting the problem.
#1446 of 4694 Bikeman3 by cmuniz Jul 03, 2004 (3:39 am)
It could be the ABS system - that would explain why it doesn't happen regularly. However, it was more a steering wheel vibration than other ABS vibrations that I have experienced. In other cars I've had with ABS you could feel the vibration coming from the brake pedal, not the steering wheel. Maybe the Highlander is different. Since I can't duplicate it I haven't taken it to the dealer, but I am on the lookout for it to happen again so I can get a better handle on what is causing it. It didn't seem to affect the braking performance but it gets your attention, which is consistent with what happens when ABS engages.
#1447 of 4694 STEERING VIBRATION while braking at 70 mph by dmoyer Jul 03, 2004 (10:00 am)
Ref msgs # 584,1440,1442,& 1446. STEERING VIBRATION while braking at 70 mph by dmoyer, msg 1439   My only experience was on a hot day, long time running at +70 mph and then had a sudden but not panic breaking sequence. At first the steering wheel vibrated back and forth what felt like the front end out of alignment, lasted just several seconds, released the brake, braked again, less noticeable and then shortly afterwards felt no vibration after the third time. Continued to drive for several hours and no problems. It was scary at 70 the first time. Felt nothing from the brake pedal. The question is how do you pose the issue to Toyota if you can't demonstrate it!
#1448 of 4694 Braking... by wwest Jul 03, 2004 (3:21 pm)
Haven't I seen something recently that says that Toyota and Lexus both have some sort of automatic brake pressure regulation?   In my 01 AWD RX300 I often notice a distinct "throbbing" when on wet pavement and slightly downhill. I have always assumed that it was due to this pressure regulating system trying to achieve equal braking on all wheels simultaneously.   No slippage between tire and pavement but one or two wheels tending to slow faster than others and the system slightly releasing pressure on those to equalize all around braking.

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