Mercedes-Benz GLA - Crunching Noise When Coming To Complete Stop

Honest John Back Room » Technical matters
What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks
View Threaded
Thu 29 Aug 2024 13:06
Mercedes-Benz GLA - Crunching Noise When Coming To Complete Stop - DannyBhoy

Hey all, thanks in advance for your time.

Have a 2017 GLA 220D 4Matic and I've got an issue (among many others with the car) that's driving me mad.

Every time I come to a complete stop, no matter how slowly or gently, I'm met with a sort of abrupt crunching/grinding noise just as the car comes to a complete stop. Best I can describe is it feels like something is clamping on under the car at the very last second before stopping and it's impossible to come to a nice smooth stop. Happens every time, whether the car is running hot or cold.

Anyone have any idea what could be causing this?

Cheers,

Danny.

Reply | Report as offensive | Link
Thu 29 Aug 2024 13:18
Mercedes-Benz GLA - Crunching Noise When Coming To Complete Stop - Adampr

Possibly an issue with the rear differential? Alternatively, do you have an auto hold function that you could switch off?

Reply | Report as offensive | Link
Thu 29 Aug 2024 13:30
Mercedes-Benz GLA - Crunching Noise When Coming To Complete Stop - DannyBhoy

Damn, that's what I was afraid of.

It's got a hold function that activates with a sharp tap on the brakes but I rarely use that.

Reply | Report as offensive | Link
Thu 29 Aug 2024 15:08
Mercedes-Benz GLA - Crunching Noise When Coming To Complete Stop - Adampr

Damn, that's what I was afraid of.

It's got a hold function that activates with a sharp tap on the brakes but I rarely use that.

I wouldn't totally despair - I am only guessing based on the little I know about these cars.

You could try changing the oil in the diff and seeing if it helps.

The reason I asked about the auto hold was just pondering if it was coming on accidentally.

Reply | Report as offensive | Link
Fri 30 Aug 2024 07:40
Mercedes-Benz GLA - Crunching Noise When Coming To Complete Stop - edlithgow

Could it be play in the suspension, perhaps as a result of/associated with corrosion? I'm thinking when you come to rest the suspension is unloaded and "recoils" a bit, with associated crunchies, though I dunno how likey this is.

Reply | Report as offensive | Link

We give you the low down on how to save on insurance, little-known tricks and tips, what insurance groups mean and how to use insurance aggregators to beat insurers.

Insurance group finder and how to save on insurance

Will you have to pay the low emissions charge?

Use our ULEZ checker to find out if your vehicle is subject to ULEZ charges. Simply enter your number plate into the Honest John ULEZ checker to see if you will have to pay to enter the London Ultra Low Emission Zone.

Check your vehicle