AutoNation review: Service department at mercedes benz of westmont

On 09/14/23, I drove to this dealership to make an appointment for extended warranty work on my 2015 Mercedes GLK 250. A Bosch certified repair shop said the check engine light was on because the EGR valve was not working. In addition, the DPF system was full of soot and unable to regenerate. I spoke to a service advisor, Tim Kronon, and told him the problems my car was experiencing. He said that's not the problem but will make a note of it.

On 09/21/23 I brought my car in for the service and Tim asked me if I had replaced the MAF sensor recently. I told him that the MAF sensor was replaced two weeks ago and it is still under warranty. After a few hours, Tim told me I needed to get the MAF sensor reprogrammed. I found this odd because the MAF sensor was already programmed. Tim told me that this would fix the problem. Two hours later the programming was finished and I could take the car home. He charged me $636.00 and the car was outside. I was told by Tim that there was no check engine light and to bring the car back if the check engine light goes on. I started up the car and the check engine light was still on. I was furious. I wasted a day and $636 on a tech's wrong guess.

I left the car there and was promised they would find the problem. Their solution was to tell me my MAF sensor was not compatible for my car and I needed to buy a $900 MAF sensor from the dealership. They then did a test and installed a factory MAF sensor in my car. I received a text message from Tim and was told the check engine light still went on with the factory sensor.

Two weeks later, I was told a manual regen on the DPF was done and there was no more check engine light only with the factory sensor. There would be no reason for me to buy the factory sensor for $900 when the other sensor was still under warranty. I took my car back to the Bosch repair shop and they replaced the sensor at no charge. Today, my car is working the way it should be. The check engine light was on because of the DPF problem, not any sensor problem.

I contacted Tim again and told him the Bosch service center fixed the problem and not his dealership. Under the circumstances, my $636 should be refunded because of his error. Tim would have the General Manager contact me. This is just a scam because neither the GM and Tim will return my phones calls.

Phil Carbone [protected]

Tim Kronon [protected]