RX350 Noise: Gear shift and Break release
06-28-13, 11:02 AM
#1
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RX350 Noise: Gear shift and Break release
Really enjoying my first Lexus, but there seem to be some noise issues...
1. When shifting the gear, especially in the morning, from P to R, it is not smooth making some annoying noise. Is this normal?
2. Also, when realeasing the break, there is some sort of a "thump" noise.
Don't think it is a big deal, but just wondering if these are considered normal.
Thanks.
1. When shifting the gear, especially in the morning, from P to R, it is not smooth making some annoying noise. Is this normal?
2. Also, when realeasing the break, there is some sort of a "thump" noise.
Don't think it is a big deal, but just wondering if these are considered normal.
Thanks.
06-28-13, 12:34 PM
#2
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My '12 RX-350 shifts smoothly and quietly even in Winter in the morning. My old Saturn Vue was loud when shifting into reverse. When releasing the emergency brake it should make a slight noise.
06-29-13, 04:37 AM
#5
Lead Lap
Some of the shift noise out of P will depend on the surface the car is parked on.
A park "pawl" or a steel rod is engaged to lock the transmission into place in the "P" position.
Cars parked uphill / downhill / flat will have the weight of the car against that pawl to different degrees.
Engage the parking brake before putting the selector into "P". This will take movement away & the pawl will have very little weight against it.
A steel cable , a series of springs & a ratchet assembly make up the parking brake. It is essentially a small drum brake assembly, mounted on the inside of the rear brake disc. Look & compare the front disc to the rear. You can see them through the wheel spokes.
Next time you get the car in for service ask them to lube the cables & possibly pull the rear discs. Dirt, brake dust & other debris can get in there & impede the mechanism.
A park "pawl" or a steel rod is engaged to lock the transmission into place in the "P" position.
Cars parked uphill / downhill / flat will have the weight of the car against that pawl to different degrees.
Engage the parking brake before putting the selector into "P". This will take movement away & the pawl will have very little weight against it.
A steel cable , a series of springs & a ratchet assembly make up the parking brake. It is essentially a small drum brake assembly, mounted on the inside of the rear brake disc. Look & compare the front disc to the rear. You can see them through the wheel spokes.
Next time you get the car in for service ask them to lube the cables & possibly pull the rear discs. Dirt, brake dust & other debris can get in there & impede the mechanism.
Last edited by SteveCraig; 06-29-13 at 05:00 AM.
06-29-13, 04:43 AM
#6
Steve, great explanation.
Some of the shift noise out of P will depend on the surface the car is parked on.
A park "pawl" or a steel rod is engaged to lock the transmission into place in the "P" position.
Cars parked uphill / downhill / flat will have the weight of the car against that pawl to different degrees.
Engage the parking brake before putting the selector into "P". This will take movement away & the pawl will have very little weight against it.
A park "pawl" or a steel rod is engaged to lock the transmission into place in the "P" position.
Cars parked uphill / downhill / flat will have the weight of the car against that pawl to different degrees.
Engage the parking brake before putting the selector into "P". This will take movement away & the pawl will have very little weight against it.
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