Q: Brakes: vacuum pump relay failire

asked by on

Hello, I purchased a new 2016 vw jetta and the check engine light came on w subsequent brake/vacuum pump relay failed at just under 400 miles. It was replaced under warranty.

6 months kater at 4850 miles, again, check engine light comes on & I had to be towed from VT to MA to vw dealer . Dealer says "software update, prrformed diagnostics, retrieved code p0556. Found TSB for software update. Charged battery and performed Road test. Operating normal at this time"

From my knowledge these two events signify a major Safety issue (brakes) failure at both 400 and 4850 miles.

It's still practically a brand new car & should have zero issues. 1 Should I be concerned for my safety? 2 as the brake assist is attached to the engine, will the loss of vacuum affect the engine life/performance? 3 is this car basically a lemon (especially if this happens again)

Thank you for your time & knowledge!

My car has 4850 miles.
My car has a manual transmission.

It sounds like your problems are isolated to the Brake Assist System which is a system designed to sense panic stop conditions and use vacuum to assist the brake pedal and give you the shortest possible stopping distance. Like the ABS system or vehicle stability control, they go into "limp home" mode when there is a problem, leaving the car in driveable condition, but without the assistance of those particular systems. . It’s just sort of like driving a car built in the 1970’s. The failure of the vacuum assist should not affect the engine. I can’t speak for the safety record of your new car, but recalls and software updates have become standard operating procedure for automobile manufacturers and like your home computer, sometimes the updates solve the problem, and sometimes they lead to more problems. I can only recommend that you try to stay informed as to the latest recalls and updates as they come down the line and have them performed as soon as possible. You should be on the dealer’s mailing list for these updates and recalls. If you continue to be completely frustrated with your new car, Years ago some states passed a "lemon law" that said if you had to bring your new car back to the dealer three times for the same problem, you were entitled to a replacement. I don’t know if those laws are still in effect, but it might be worth doing the research.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Brakes: vacuum pump relay failire

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a Volkswagen Jetta 02 and it starts up but when in gear it won't move when I press the gas pedal what do you think is wrong

Hi Monticello. Thanks for contacting us tonight. In most cases, this issue is caused by a damaged shift solenoid or perhaps an obstruction of debris inside the transmission hydraulic lines. It could also be caused by damaged inside the transmission...

Q: I just had a diagnostic performed on my car and the following error code came up P0299 boost control sensor.

Hi there. Check to see what the oil pressure is in the engine. If the oil pressure is low, then the P0299 code can appear. Also, check for the EGR operation and see if its sticking. A faulty EGR will...

Q: on/off humming buzzing noise on highway

Hey there, it looks like there was a problem with the link you added. However, from what you described, it sounds like the noise may be the cooling fan coming on and off as you are driving. Check the cooling...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...