Mercedes-Benz GL350 BLUETEC 4MATIC Questions

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I had to repair the air suspension once already and now it has disconnected again. What could be causing this and is there a recall on this?
Is this possibly related to another engine problem since the oil cooler oil leak is rare
Looking to change tires on my car
My Blue tec gl350 one rear Tyre was change recently. since then i have had yellow triangle flash with loss of power intermittent.

I try to release excess 15 psi in air balance of change tyre. which was a lot better , Today I start my truck, dive for about 800 yards and it stop. start again it after 200 yard it stop again. what could this be
Diesel 250 Glk. has 92,000 miles on it has always been well-maintained.
What seems to make the problem better or worse? mechanics that won't give me a straight answer and treat me like I am stupid
How long have you had this problem? 2 days
In a minute it cranked up again. it isn't running hot.
What is my problem?
Is there any recall on the adblue heater? Or what can be done if it fails so frequently.
I just purchased a 2012 GL 350. The Command interface is terrible (slow and not intuitive). Does anyone make a replacement in-dash radio/navigation system that is compatible with this car? I'd be grateful for any advice. Thanks.
After washing my car GLK350, I have lost the power on the dashboard, as well as the signals and the functions bottom on the steering wheel.

Please advise and thank you
Dealership said it's the oil cooler. They replaced easily accessible gaskets. It still leaked. Now to replace oil cooler is $4,000 and/or repair the O rings . Insurance company won't cover unless it was directly caused by the accident. Dealership says these things wear out. What is the average life expectancy of a part like this? Could a rear-ended accident caused? Need advice. Thank you. Sabrina
How many miles can you go over without effecting the engine if the correct oil is used?
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