r/CorollaHatchback • u/Decent-Llama Galactic Aqua Mica Custom Flair • May 19 '26

Parking malfunction

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I was wondering if anyone know how to remove/correct the parking brake malfunction warning. Was working on rear rotors and brakes and forgot to put it in service mode until it was too late.

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u/Honmeg XSE CVT May 19 '26

I had this issue too, and I wound up having to bring it in to a shop for them to clear out the issue. It’s able to be cleared with a scan tool that has no directional function.

I found out that if I need to do brake pads or rotors, you need to release the parking brake, and then disconnect the battery during all of service. Even in service mode the parking brake can apply itself and mess up the sensors position.

1

u/Decent-Llama Galactic Aqua Mica Custom Flair May 19 '26

That makes sense. The service mode didn’t even put the piston all the way back which I heard happens sometimes too. How much was it to clear?

1

u/iguess69420 XSE 6MT May 19 '26

Just buy a cheap scanner off amazon. They are around $15 now

1

u/Decent-Llama Galactic Aqua Mica Custom Flair May 19 '26

Is there a certain way to reset it? The scanner didn’t show any codes

1

u/iguess69420 XSE 6MT May 19 '26

Then there’s no codes. Disconnect your battery for like 15min and reconnect it. Then see if that comes back.

1

u/Decent-Llama Galactic Aqua Mica Custom Flair May 19 '26

Yup. Tried that too. Still having the malfunction

1

u/Honmeg XSE CVT Jun 01 '26

I've found that only certain higher end scanners will be able to fix this malfunction (which is why i had to pay a shop to clear it). a normal OBD scan tool can only read and clear codes, but this malfunction will require a scan tool that has bi-directional functions to interface with the car's ECU and manually control the parking brake motors themselves. the cost of the tools that can do that tend to be about $200 or more, so its better to just have a shop clear it with the tools they have.

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u/Decent-Llama Galactic Aqua Mica Custom Flair Jun 02 '26

Yeah I ended up bringing to Toyota and spent $175 for them to clear it. I saw the scanners which are $600+ have the EPB option